MDH-Metric Brochure 2025

CAT.MDHBROCHURE.8/25

Coated Carbide Drills for Steel & Cast Iron MDH Series

A new era of High-Eciency Drilling

RP THINNING with extremely low cutting resistance HF Coat featuring superb wear resistance and thermal resistance

Coated Carbide Drills for Steel & Cast Iron MDH Series

This PDF shows MDH Availability - Metric Only. Inch MDH lineup expansion is coming soon!

Low cutting resistance stabilizes

high-efficiency drilling

RP THINING

D Wide chip pocket enables smooth chip evacuation and reduced cutting, resistance ensuring stable drilling in high- efficiency conditions

MDH Series

Conventional Tool

3,000

f = .0098 IPR f = .0197 IPR

2,500

2,000

1,500

1,000

500

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Drilling Time (sec)

Work Material: 1050 Steel Tool: MDH0800S08H05 Cutting Conditions: vc = 265 SFM H = 1.496” (Through)

Wet (Water-soluble, Internal Coolant Supply)

Coated Carbide Drills for Steel & Cast Iron MDH Series

Exceptional tool life in high-efficiency drilling

New Cutting Edge Shape

D Optimized cutting edge shape suppresses stress concentration and prevents chipping in high-efficiency drilling with high cutting edge load

MDH Series

Conventional Tool

Von Mises Stress (MPa) 3,500

MDH Series

MDH Series Conventional Tool

Tool Life Over 2.5 Times Longer Able to Continue

Fracture

After Drilling 365 feet

130

195

260

325

390

Drilling Distance (Feet)

Work Material: 1050 Steel Tool: MDH0800S08H05 Cutting Conditions: vc = 465 SFM f = .0157 IPR H = 1.496” (Through) Wet (Water-soluble, Internal Coolant Supply)

New Grade ACH70

HF Coat D TiAlCrSi-based super multi-layered coating provides excellent wear resistance and thermal resistance Tough TiAlB-based coating is employed on the carbide substrate to improve coating strength and fracture resistance

Super multi-layered TiAlCrSi Hardness HV: 46GPa Starting Temperature for Oxidization: 1,100°C TiAlB-based toughness layer

Balances wear and fracture resistance

Coated Carbide Drills for Steel & Cast Iron MDH Series

Unprecedented high-efficiency drilling D High-efficiency drilling delivers increased production capacity and yield Efficiency Comparison in Steel Drilling (Diameter: ø 8mm / ø.3150”)

.0197

MDH Series

.0157

.0118

Conventional Tool

.0079

.0039

Low

400

330

465

130

200

265

Cutting Speed vc (SFM)

Efficiency Comparison in Cast Iron Drilling ( Diameter: ø 8mm / ø.3150” )

.0236

MDH Series

.0197

.0157

.0118

Conventional Tool

.0079

.0039

Low

400

130

200

265

330

465

Cutting Speed vc (SFM)

Coated Carbide Drills for Steel & Cast Iron MDH Series

D Contributes to reduced costs through high-efficiency drilling

Costs per Hour

Personnel Costs

Drilling Time Work hours reduced through high-efficiency drilling

Machinery Depreciation Costs Facility Costs Electricity Costs, etc.

Costs per Product

Tool Cost Material Costs, etc. The impact of tool performance is significant The impact of tooling costs is small

Reduced drilling time enables the reduction of personnel costs and other hourly cost

(Example of cost calculation)

D Sumitomo Solid Carbide Drill Lineup by Material

High

HX Series

MDH Series

· Efficiency · Thrust

NHGS Series

GS Series / HGS Series

MDM Series

Low

Carbon Steel

Stainless Steel Exotic Alloy Non-Ferrous Metal Alloy Steel

Die Steel Cast Iron

Coated Carbide Drills for Steel & Cast Iron MDH Series

High-efficiency Drilling Performance Reduced Cycle Time

(Cylinder Component)

2.4 sec 56% reduction

Drilling time 3.6

Drilling time 1.2

Drill return time 0.7

MDH Series

Conventional Tool

MDH Series

Conventional Tool

130

195

260

325

390

After Drilling 500 pcs

After Drilling 1,500 pcs

Work Material: 4140 Steel, Tool: MDH0600S06H05 Cutting Conditions: MDH Series

vc = 265 SFM f = .0138 IPR vc = 168 SFM f = .0075 IPR

H = 1.000” (Blind) Wet (Water-soluble, Internal Coolant Supply) H = 1.000” (Blind) Wet (Water-soluble, Internal Coolant Supply)

Conventional Tool

Approx. 3 times the drilling efficiency and 3 times longer tool life

Power Consumption and Drilling Time per Hole

Power Consumption per Hole

Standby Pump Drilling — D Drilling time

8,000

2.0

Conventional Tool

MDH series

1.5

6,000

MDH series

Conventional Tool

MDH series

4,000

1.0

0.5

2,000

0.50 0.25 Feed Rate per Revolution f (mm/rev) 0.25

Work Material: 1050 Stel, Tool: MDH0800S08H05 Cutting Conditions: vc = 265 SFM H = 1.496” (Through)

Wet (Water-soluble, Internal Coolant Supply)

*Power consumption is based on calculations made at Sumitomo-owned facilities and may vary with operating environment.

High-efficiency drilling substantially reduces drilling power consumption

Coated Carbide Drills for Steel & Cast Iron MDH Series

High-efficiency Drilling Performance Longer Tool Life

High-efficiency Cutting Conditions Conventional Cutting Conditions

130

195

260

325

390

Drilling Distance (Feet)

High-efficiency Cutting Conditions f = .0157 IPR

Conventional Cutting Conditions f = .0098 IPR

MDH Series

High-efficiency Cutting Conditions After Drilling 365 ft.

Conventional Cutting Conditions After Drilling 220 ft.

*Tool life varies based on the workpiece and operating environment. The above does not guarantee that tool life will be extended.

Reduced peripheral abrasion distance suppresses wear

Work Material: 1050 Steel, Tool: MDH0800S08H05 High-efficiency Cutting Conditions: vc = 465 SFM f = .0157 IPR Conventional Cutting Conditions: vc = 265 SFM f = .0098 IPR

H = 1.496” (Through) Wet (Water-soluble, Internal Coolant Supply) H = 1.496” (Through) Wet (Water-soluble, Internal Coolant Supply)

2.8 times the drilling efficiency and 1.3 times longer tool life

High-efficiency Drilling Performance Hole Accuracy Comparison

Effective use of submargin from entrance Wide chisel edge engages firmly to suppress slanting

MDH series Conventional Tool

f = .20 inch /rev

f = .10 inch/rev

'ULOOLQJUHIHUHQFH

.0012”

.0015”

3RVLWLRQLQJ'HYLDWLRQ

.5901”

.00028"

.00024"

+ROH'HYLDWLRQ

MDH Series

Conventional Tool

Work Material: 1050 Steel, Tool: MDH0800S08H05 Cutting Conditions: vc = 330 SFM

Wet (Water-soluble, Internal Coolant Supply)

Hole position precision and deviation equivalent to conventional cutting conditions, even at twice the drilling efficiency

Coated Carbide Drills for Steel & Cast Iron MDH Series

Carbon Steel/ Alloy Steel up to 0.28%

Carbon Steel/ Alloy Steel from 0.29%

Coat HF

- Metric Availability

Tempered Steel

Ductile Cast Iron

Cast Iron

For fitting tolerances, refer to the General Catalog [Chapter N References].

This PDF shows MDH Availability - Metric Only. Inch MDH lineup expansion is coming soon!

Fig 1

LCF

OAL

¢ Diameter ø3.0 to 4.8mm

Dimensions ( mm )

Roll Form Tap Size

Dia. DC

Hole Depth (L/D)

Effective Length Flute Length Overall Length

Tip PL

Shank Dia.

Cat. No.

Fig

LCF

OAL

DCON

mm Inch

Inch

mm 20.6 32.6 35.6 20.6 32.6 35.6 20.6 32.6 35.6 20.6 32.6 35.6 20.6 32.6 35.6 20.6 32.6 35.6 23.2 36.7 42.7 23.2 36.7 42.7 23.2 36.7 42.7 23.2 36.7 42.7 23.2 36.7 42.7 25.8 40.8 47.8 25.8 40.8 47.8 25.8 40.8 47.8 25.8 40.8 47.8 25.8 40.8 47.8 27.9 44.9 52.9 27.9 44.9 52.9 27.9 44.9 52.9

mm 72.6 86.6 92.6 72.6 86.6 92.6 72.6 86.6 92.6 72.6 86.6 92.6 72.6 86.6 92.6 72.6 86.6 92.6 72.7 86.7 92.7 72.7 86.7 92.7 72.7 86.7 92.7 72.7 86.7 92.7 72.7 86.7 92.7 80.8 98.8

3.0 0.1181 3.0 0.1181 3.0 0.1181 3.1 0.1220 3.1 0.1220 3.1 0.1220 3.2 0.1260 3.2 0.1260 3.2 0.1260 3.3 0.1299 3.3 0.1299 3.3 0.1299 3.4 0.1339 3.4 0.1339 3.4 0.1339 3.5 0.1378 3.5 0.1378 3.5 0.1378 3.6 0.1417 3.6 0.1417 3.6 0.1417 3.7 0.1457 3.7 0.1457 3.7 0.1457 3.8 0.1496 3.8 0.1496 3.8 0.1496 3.9 0.1535 3.9 0.1535 3.9 0.1535 4.0 0.1575 4.0 0.1575 4.0 0.1575 4.1 0.1614 4.1 0.1614 4.1 0.1614 4.2 0.1654 4.2 0.1654 4.2 0.1654 4.3 0.1693 4.3 0.1693 4.3 0.1693 4.4 0.1732 4.4 0.1732 4.4 0.1732 4.5 0.1772 4.5 0.1772 4.5 0.1772 4.6 0.1811 4.6 0.1811 4.6 0.1811 4.7 0.1850 4.7 0.1850 4.7 0.1850 4.8 0.1890 4.8 0.1890 4.8 0.1890 Grade: ACH70

3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8

0.6339 1.1063 1.2244 0.6299 1.1024 1.2205 0.6220 1.0945 1.2126 0.6181 1.0906 1.2087 0.6102 1.0827 1.2008 0.6063 1.0787 1.1969 0.7008 1.2323 1.4685 0.6969 1.2283 1.4646 0.6890 1.2205 1.4567 0.6850 1.2165 1.4528 0.6772 1.2087 1.4449 0.7756 1.3661 1.6417 0.7677 1.3583 1.6339 0.7638 1.3543 1.6299 0.7559 1.3465 1.6220 0.7520 1.3425 1.6181 0.8268 1.4961 1.8110 0.8228 1.4921 1.8071 0.8150 1.4843 1.7992

0.8110 1.2835 1.4016 0.8110 1.2835 1.4016 0.8110 1.2835 1.4016 0.8110 1.2835 1.4016 0.8110 1.2835 1.4016 0.8110 1.2835 1.4016 0.9134 1.4449 1.6811 0.9134 1.4449 1.6811 0.9134 1.4449 1.6811 0.9134 1.4449 1.6811 0.9134 1.4449 1.6811 1.0157 1.6063

2.8583 3.4094 3.6457 2.8583 3.4094 3.6457 2.8583 3.4094 3.6457 2.8583 3.4094 3.6457 2.8583 3.4094 3.6457 2.8583 3.4094 3.6457 2.8622 3.4134 3.6496 2.8622 3.4134 3.6496 2.8622 3.4134 3.6496 2.8622 3.4134 3.6496 2.8622 3.4134 3.6496 3.1811 3.8898

0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.1575 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1

 MDH0300S04H03 16.1  MDH0300S04H05 28.1  MDH0300S04H08 31.1  MDH0310S04H03 16.0  MDH0310S04H05 28.0  MDH0310S04H08 31.0  MDH0320S04H03 15.8  MDH0320S04H05 27.8  MDH0320S04H08 30.8  MDH0330S04H03 15.7  MDH0330S04H05 27.7  MDH0330S04H08 30.7  MDH0340S04H03 15.5  MDH0340S04H05 27.5  MDH0340S04H08 30.5  MDH0350S04H03 15.4  MDH0350S04H05 27.4  MDH0350S04H08 30.4  MDH0360S04H03 17.8  MDH0360S04H05 31.3  MDH0360S04H08 37.3  MDH0370S04H03 17.7  MDH0370S04H05 31.2  MDH0370S04H08 37.2  MDH0380S04H03 17.5  MDH0380S04H05 31.0  MDH0380S04H08 37.0  MDH0390S04H03 17.4  MDH0390S04H05 30.9  MDH0390S04H08 36.9  MDH0400S04H03 17.2  MDH0400S04H05 30.7  MDH0400S04H08 36.7  MDH0410S06H03 19.7  MDH0410S06H05 34.7  MDH0410S06H08 41.7  MDH0420S06H03 19.5  MDH0420S06H05 34.5  MDH0420S06H08 41.5  MDH0430S06H03 19.4  MDH0430S06H05 34.4  MDH0430S06H08 41.4  MDH0440S06H03 19.2  MDH0440S06H05 34.2  MDH0440S06H08 41.2  MDH0450S06H03 19.1  MDH0450S06H05 34.1  MDH0450S06H08 41.1  MDH0460S06H03 21.0  MDH0460S06H05 38.0  MDH0460S06H08 46.0  MDH0470S06H03 20.9  MDH0470S06H05 37.9  MDH0470S06H08 45.9  MDH0480S06H03 20.7  MDH0480S06H05 37.7  MDH0480S06H08 45.7  : Worldwide Warehouse Item

0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9

4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0

0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0236 0.0276 0.0276 0.0276 0.0276 0.0276 0.0276 0.0276 0.0276 0.0276 0.0276 0.0276 0.0276 0.0276 0.0276 0.0276 0.0315 0.0315 0.0315 0.0315 0.0315 0.0315 0.0315 0.0315 0.0315 0.0315 0.0315 0.0315 0.0315 0.0315 0.0315 0.0354 0.0354 0.0354 0.0354 0.0354 0.0354 0.0354 0.0354 0.0354

6-40

8-32

1.8819 105.8 4.1654

1.0157 1.6063

3.1811 3.8898

80.8 98.8

1.8819 105.8 4.1654

1.0157 1.6063

3.1811 3.8898

80.8 98.8

1.8819 105.8 4.1654

1.0157 1.6063

3.1811 3.8898

80.8 98.8

1.8819 105.8 4.1654

1.0157 1.6063

3.1811 3.8898

80.8 98.8

10-32

1.8819 105.8 4.1654

1.0984 1.7677

3.1850 3.8937

80.9 98.9

2.0827 105.9 4.1693

1.0984 1.7677

3.1850 3.8937

80.9 98.9

2.0827 105.9 4.1693

1.0984 1.7677

3.1850 3.8937

80.9 98.9

2.0827 105.9 4.1693

Coated Carbide Drills for Steel & Cast Iron MDH Series

- Metric Availability

Carbon Steel/ Alloy Steel up to 0.28%

Carbon Steel/ Alloy Steel from 0.29%

Coat HF

Tempered Steel

Ductile Cast Iron

Cast Iron

For fitting tolerances, refer to the General Catalog [Chapter N References].

This PDF shows MDH Availability - Metric Only. Inch MDH lineup expansion is coming soon!

Fig 1

LCF

OAL

¢ Diameter ø4.9 to 6.7mm

Dimensions ( mm )

Roll Form Tap Size

Dia. DC

Hole Depth (L/D)

Effective Length Flute Length Overall Length

Tip PL

Shank Dia.

Cat. No.

Fig

LCF

OAL

DCON

mm Inch

Inch

mm 27.9 44.9 52.9 27.9 44.9 52.9 28.5 45.0 60.0 28.5 45.0 60.0 28.5 45.0 60.0 28.5 45.0 60.0 28.5 45.0 60.0 31.1 49.1 67.1 31.1 49.1 67.1 31.1 49.1 67.1 31.1 49.1 67.1 31.1 49.1 67.1 33.7 53.2 71.2 33.7 53.2 71.2 33.7 53.2 71.2 33.7 53.2 71.2 33.7 53.2 71.2 34.3 55.3 76.3 34.3 55.3 76.3

mm 80.9 98.9

4.9 0.1929 4.9 0.1929 4.9 0.1929 5.0 0.1969 5.0 0.1969 5.0 0.1969 5.1 0.2008 5.1 0.2008 5.1 0.2008 5.2 0.2047 5.2 0.2047 5.2 0.2047 5.3 0.2087 5.3 0.2087 5.3 0.2087 5.4 0.2126 5.4 0.2126 5.4 0.2126 5.5 0.2165 5.5 0.2165 5.5 0.2165 5.6 0.2205 5.6 0.2205 5.6 0.2205 5.7 0.2244 5.7 0.2244 5.7 0.2244 5.8 0.2283 5.8 0.2283 5.8 0.2283 5.9 0.2323 5.9 0.2323 5.9 0.2323 6.0 0.2362 6.0 0.2362 6.0 0.2362 6.1 0.2402 6.1 0.2402 6.1 0.2402 6.2 0.2441 6.2 0.2441 6.2 0.2441 6.3 0.2480 6.3 0.2480 6.3 0.2480 6.4 0.2520 6.4 0.2520 6.4 0.2520 6.5 0.2559 6.5 0.2559 6.5 0.2559 6.6 0.2598 6.6 0.2598 6.6 0.2598 6.7 0.2638 6.7 0.2638 6.7 0.2638 Grade: ACH70

3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8

0.8110 1.4803 1.7953 0.8031 1.4724 1.7874 0.8228 1.4724 2.0630 0.8150 1.4646 2.0551 0.8110 1.4606 2.0512 0.8031 1.4528 2.0433 0.7992 1.4488 2.0394 0.8937 1.6024 2.3110 0.8898 1.5984 2.3071 0.8819 1.5906 2.2992 0.8780 1.5866 2.2953 0.8701 1.5787 2.2874 0.9685 1.7362 2.4449 0.9606 1.7283 2.4370 0.9567 1.7244 2.4331 0.9488 1.7165 2.4252 0.9449 1.7126 2.4213 0.9606 1.7874 2.6142 0.9567 1.7835 2.6102

1.0984 1.7677

3.1850 3.8937

0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.2362 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1

 MDH0490S06H03 20.6  MDH0490S06H05 37.6  MDH0490S06H08 45.6  MDH0500S06H03 20.4  MDH0500S06H05 37.4  MDH0500S06H08 45.4  MDH0510S06H03 20.9  MDH0510S06H05 37.4  MDH0510S06H08 52.4  MDH0520S06H03 20.7  MDH0520S06H05 37.2  MDH0520S06H08 52.2  MDH0530S06H03 20.6  MDH0530S06H05 37.1  MDH0530S06H08 52.1  MDH0540S06H03 20.4  MDH0540S06H05 36.9  MDH0540S06H08 51.9  MDH0550S06H03 20.3  MDH0550S06H05 36.8  MDH0550S06H08 51.8  MDH0560S06H03 22.7  MDH0560S06H05 40.7  MDH0560S06H08 58.7  MDH0570S06H03 22.6  MDH0570S06H05 40.6  MDH0570S06H08 58.6  MDH0580S06H03 22.4  MDH0580S06H05 40.4  MDH0580S06H08 58.4  MDH0590S06H03 22.3  MDH0590S06H05 40.3  MDH0590S06H08 58.3  MDH0600S06H03 22.1  MDH0600S06H05 40.1  MDH0600S06H08 58.1  MDH0610S08H03 24.6  MDH0610S08H05 44.1  MDH0610S08H08 62.1  MDH0620S08H03 24.4  MDH0620S08H05 43.9  MDH0620S08H08 61.9  MDH0630S08H03 24.3  MDH0630S08H05 43.8  MDH0630S08H08 61.8  MDH0640S08H03 24.1  MDH0640S08H05 43.6  MDH0640S08H08 61.6  MDH0650S08H03 24.0  MDH0650S08H05 43.5  MDH0650S08H08 61.5  MDH0660S08H03 24.4  MDH0660S08H05 45.4  MDH0660S08H08 66.4  MDH0670S08H03 24.3  MDH0670S08H05 45.3  MDH0670S08H08 66.3  : Worldwide Warehouse Item

0.9 0.9 0.9 0.9 0.9 0.9 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.3 1.3 1.3 1.3 1.3 1.3

6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0

0.0354 0.0354 0.0354 0.0354 0.0354 0.0354 0.0394 0.0394 0.0394 0.0394 0.0394 0.0394 0.0394 0.0394 0.0394 0.0394 0.0394 0.0394 0.0394 0.0394 0.0394 0.0433 0.0433 0.0433 0.0433 0.0433 0.0433 0.0433 0.0433 0.0433 0.0433 0.0433 0.0433 0.0433 0.0433 0.0433 0.0472 0.0472 0.0472 0.0472 0.0472 0.0472 0.0472 0.0472 0.0472 0.0472 0.0472 0.0472 0.0472 0.0472 0.0472 0.0512 0.0512 0.0512 0.0512 0.0512 0.0512

2.0827 105.9 4.1693

1.0984 1.7677

3.1850 3.8937

80.9 98.9

12-24

2.0827 105.9 4.1693

1.1220

3.2677

83.0

1.7717 101.0 3.9764 2.3622 119.0 4.6850

12-28

1.1220

3.2677

83.0

1.7717 101.0 3.9764 2.3622 119.0 4.6850

1.1220

3.2677

83.0

1.7717 101.0 3.9764 2.3622 119.0 4.6850

1.1220

3.2677

83.0

1.7717 101.0 3.9764 2.3622 119.0 4.6850

1.1220

3.2677

83.0

1.7717 101.0 3.9764 2.3622 119.0 4.6850

1.2244

3.2717

83.1

1.9331 101.1 3.9803 2.6417 119.1 4.6890

1.2244

3.2717

83.1

1.9331 101.1 3.9803 2.6417 119.1 4.6890

1.2244

3.2717

83.1

1.9331 101.1 3.9803 2.6417 119.1 4.6890

1/4-20

1.2244

3.2717

83.1

1.9331 101.1 3.9803 2.6417 119.1 4.6890

1.2244

3.2717

83.1

1.9331 101.1 3.9803 2.6417 119.1 4.6890

1.3268

3.5118

89.2

2.0945 110.2 4.3386 2.8031 131.2 5.1654

1.3268

3.5118

89.2

2.0945 110.2 4.3386 2.8031 131.2 5.1654

1.3268

3.5118

89.2

2.0945 110.2 4.3386 2.8031 131.2 5.1654

1.3268

3.5118

89.2

2.0945 110.2 4.3386 2.8031 131.2 5.1654

1.3268

3.5118

89.2

2.0945 110.2 4.3386 2.8031 131.2 5.1654

1.3504

3.5157

89.3

2.1772 110.3 4.3425 3.0039 131.3 5.1693

1.3504

3.5157

89.3

2.1772 110.3 4.3425 3.0039 131.3 5.1693

Coated Carbide Drills for Steel & Cast Iron MDH Series

Carbon Steel/ Alloy Steel up to 0.28%

Carbon Steel/ Alloy Steel from 0.29%

Coat HF

- Metric Availability

Tempered Steel

Ductile Cast Iron

Cast Iron

For fitting tolerances, refer to the General Catalog [Chapter N References].

This PDF shows MDH Availability - Metric Only. Inch MDH lineup expansion is coming soon!

Fig 1

LCF

OAL

¢ Diameter ø6.8 to 8.6mm

Dimensions ( mm )

Roll Form Tap Size

Dia. DC

Hole Depth (L/D)

Effective Length Flute Length Overall Length

Tip PL

Shank Dia.

Cat. No.

Fig

LCF

OAL

DCON

mm Inch

Inch

mm 34.3 55.3 76.3 34.3 55.3 76.3 34.3 55.3 76.3 38.9 61.4 82.4 38.9 61.4 82.4 38.9 61.4 82.4 38.9 61.4 82.4 38.9 61.4 82.4 41.5 65.5 89.5 41.5 65.5 89.5 41.5 65.5 89.5 41.5 65.5 89.5 41.5 65.5 89.5 44.0 69.5 93.5 44.0 69.5 93.5 44.0 69.5 93.5 44.0 69.5 93.5 44.0 69.5 93.5 44.6 71.6 98.6

mm 89.3

Grade: ACH70 8.6 0.3386 8.6 0.3386 8.6 0.3386 8.5 0.3346 8.5 0.3346 8.4 0.3307 8.4 0.3307 8.4 0.3307 8.5 0.3346 7.8 0.3071 7.9 0.3110 7.9 0.3110 7.9 0.3110 8.0 0.3150 8.0 0.3150 8.0 0.3150 8.1 0.3189 8.1 0.3189 8.1 0.3189 8.2 0.3228 8.2 0.3228 8.2 0.3228 8.3 0.3268 8.3 0.3268 8.3 0.3268 6.8 0.2677 6.8 0.2677 6.8 0.2677 6.9 0.2717 6.9 0.2717 6.9 0.2717 7.0 0.2756 7.0 0.2756 7.0 0.2756 7.1 0.2795 7.1 0.2795 7.1 0.2795 7.2 0.2835 7.2 0.2835 7.2 0.2835 7.3 0.2874 7.3 0.2874 7.3 0.2874 7.4 0.2913 7.4 0.2913 7.4 0.2913 7.5 0.2953 7.5 0.2953 7.5 0.2953 7.6 0.2992 7.6 0.2992 7.6 0.2992 7.7 0.3031 7.7 0.3031 7.7 0.3031 7.8 0.3071 7.8 0.3071

3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8

0.9488 1.7756 2.6024 0.9449 1.7717 2.5984 0.9370 1.7638 2.5906 1.1142 2.0000 2.8268 1.1063 1.9921 2.8189 1.1024 1.9882 2.8150 1.0945 1.9803 2.8071 1.0906 1.9764 2.8031 1.1850 2.1299 3.0748 1.1811 2.1260 3.0709 1.1732 2.1181 3.0630 1.1693 2.1142 3.0591 1.1614 2.1063 3.0512 1.2559 2.2598 3.2047 1.2480 2.2520 3.1969 1.2441 2.2480 3.1929 1.2362 2.2402 3.1850 1.2323 2.2362 3.1811 1.2480 2.3110 3.3740

1.3504

3.5157

0.0512 0.0512 0.0512 0.0512 0.0512 0.0512 0.0512 0.0512 0.0512 0.0551 0.0551 0.0551 0.0551 0.0551 0.0551 0.0551 0.0551 0.0551 0.0551 0.0551 0.0551 0.0551 0.0551 0.0551 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0591 0.0630 0.0630 0.0630

0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3150 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1

 MDH0680S08H03 24.1  MDH0680S08H05 45.1  MDH0680S08H08 66.1  MDH0690S08H03 24.0  MDH0690S08H05 45.0  MDH0690S08H08 66.0  MDH0700S08H03 23.8  MDH0700S08H05 44.8  MDH0700S08H08 65.8  MDH0710S08H03 28.3  MDH0710S08H05 50.8  MDH0710S08H08 71.8  MDH0720S08H03 28.1  MDH0720S08H05 50.6  MDH0720S08H08 71.6  MDH0730S08H03 28.0  MDH0730S08H05 50.5  MDH0730S08H08 71.5  MDH0740S08H03 27.8  MDH0740S08H05 50.3  MDH0740S08H08 71.3  MDH0750S08H03 27.7  MDH0750S08H05 50.2  MDH0750S08H08 71.2  MDH0760S08H03 30.1  MDH0760S08H05 54.1  MDH0760S08H08 78.1  MDH0770S08H03 30.0  MDH0770S08H05 54.0  MDH0770S08H08 78.0  MDH0780S08H03 29.8  MDH0780S08H05 53.8  MDH0780S08H08 77.8  MDH0790S08H03 29.7  MDH0790S08H05 53.7  MDH0790S08H08 77.7  MDH0800S08H03 29.5  MDH0800S08H05 53.5  MDH0800S08H08 77.5  MDH0810S10H03 31.9  MDH0810S10H05 57.4  MDH0810S10H08 81.4  MDH0820S10H03 31.7  MDH0820S10H05 57.2  MDH0820S10H08 81.2  MDH0830S10H03 31.6  MDH0830S10H05 57.1  MDH0830S10H08 81.1  MDH0840S10H03 31.4  MDH0840S10H05 56.9  MDH0840S10H08 80.9  MDH0850S10H03 31.3  MDH0850S10H05 56.8  MDH0850S10H08 80.8  MDH0860S10H03 31.7  MDH0860S10H05 58.7  MDH0860S10H08 85.7  : Worldwide Warehouse Item

1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.6 1.6 1.6

8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0

2.1772 110.3 4.3425 3.0039 131.3 5.1693

1.3504

3.5157

89.3

2.1772 110.3 4.3425 3.0039 131.3 5.1693

1.3504

3.5157

89.3

2.1772 110.3 4.3425 3.0039 131.3 5.1693

1.5315

3.7559

95.4

2.4173 119.4 4.7008 3.2441 143.4 5.6457

1.5315

3.7559

95.4

2.4173 119.4 4.7008 3.2441 143.4 5.6457

1.5315

3.7559

95.4

2.4173 119.4 4.7008 3.2441 143.4 5.6457

5/16-28

1.5315

3.7559

95.4

2.4173 119.4 4.7008 3.2441 143.4 5.6457

M8x1.25

1.5315

3.7559

95.4

2.4173 119.4 4.7008 3.2441 143.4 5.6457

1.6339

3.7598

95.5

2.5787 119.5 4.7047 3.5236 143.5 5.6496

1.6339

3.7598

95.5

2.5787 119.5 4.7047 3.5236 143.5 5.6496

1.6339

3.7598

95.5

2.5787 119.5 4.7047 3.5236 143.5 5.6496

1.6339

3.7598

95.5

2.5787 119.5 4.7047 3.5236 143.5 5.6496

1.6339

3.7598

95.5

2.5787 119.5 4.7047 3.5236 143.5 5.6496 1.7323 101.5 3.9961 2.7362 128.5 5.0591 3.6811 155.5 6.1220 1.7323 101.5 3.9961 2.7362 128.5 5.0591 3.6811 155.5 6.1220 1.7323 101.5 3.9961 2.7362 128.5 5.0591 3.6811 155.5 6.1220 1.7323 101.5 3.9961 2.7362 128.5 5.0591 3.6811 155.5 6.1220 1.7323 101.5 3.9961 2.7362 128.5 5.0591 3.6811 155.5 6.1220 1.7559 101.6 4.0000 2.8189 128.6 5.0630 3.8819 155.6 6.1260

10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0

M9x.75

Coated Carbide Drills for Steel & Cast Iron MDH Series - Metric Availability

For fitting tolerances, refer to the General Catalog [Chapter N References].

This PDF shows MDH Availability - Metric Only. Inch MDH lineup expansion is coming soon!

Fig 1

LCF

OAL

¢ Diameter ø8.7 to 10.5mm

Dimensions ( mm )

Roll Form Tap Size

Dia. DC

Hole Depth (L/D)

Effective Length Flute Length Overall Length

Tip PL

Shank Dia.

Cat. No.

Fig

LCF

OAL

DCON

mm Inch

Inch

mm 44.6 71.6 98.6 44.6 71.6 98.6 44.6 71.6 98.6 44.6 71.6 98.6 49.2 77.7

mm 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0

Grade: ACH70 10.5 0.4134 10.5 0.4134 10.5 0.4134 10.4 0.4094 10.4 0.4094 10.3 0.4055 10.3 0.4055 10.3 0.4055 10.4 0.4094 9.7 0.3819 9.8 0.3858 9.8 0.3858 9.8 0.3858 9.9 0.3898 9.9 0.3898 9.9 0.3898 10.0 0.3937 10.0 0.3937 10.0 0.3937 10.1 0.3976 10.1 0.3976 10.1 0.3976 10.2 0.4016 10.2 0.4016 10.2 0.4016 8.7 0.3425 8.7 0.3425 8.7 0.3425 8.8 0.3465 8.8 0.3465 8.8 0.3465 8.9 0.3504 8.9 0.3504 8.9 0.3504 9.0 0.3543 9.0 0.3543 9.0 0.3543 9.1 0.3583 9.1 0.3583 9.1 0.3583 9.2 0.3622 9.2 0.3622 9.2 0.3622 9.3 0.3661 9.3 0.3661 9.3 0.3661 9.4 0.3701 9.4 0.3701 9.4 0.3701 9.5 0.3740 9.5 0.3740 9.5 0.3740 9.6 0.3780 9.6 0.3780 9.6 0.3780 9.7 0.3819 9.7 0.3819

3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5 8 3 5

1.2441 2.3071 3.3701 1.2362 2.2992 3.3622 1.2323 2.2953 3.3583 1.2244 2.2874 3.3504 1.4016 2.5236

1.7559 101.6 4.0000 2.8189 128.6 5.0630 3.8819 155.6 6.1260 1.7559 101.6 4.0000 2.8189 128.6 5.0630 3.8819 155.6 6.1260 1.7559 101.6 4.0000 2.8189 128.6 5.0630 3.8819 155.6 6.1260 1.7559 101.6 4.0000 2.8189 128.6 5.0630 3.8819 155.6 6.1260 1.9370 107.7 4.2402 3.0591 137.7 5.4213

0.0630 0.0630 0.0630 0.0630 0.0630 0.0630 0.0630 0.0630 0.0630 0.0630 0.0630 0.0630 0.0669 0.0669 0.0669 0.0669 0.0669 0.0669 0.0669 0.0669 0.0669 0.0669 0.0669 0.0669 0.0669 0.0669 0.0669 0.0709 0.0709 0.0709 0.0709 0.0709 0.0709 0.0709 0.0709 0.0709 0.0709 0.0709 0.0709 0.0709 0.0709 0.0709 0.0748 0.0748 0.0748 0.0748 0.0748 0.0748 0.0748 0.0748 0.0748 0.0748 0.0748 0.0748 0.0748 0.0748 0.0748

0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.3937 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1

 MDH0870S10H03 31.6  MDH0870S10H05 58.6  MDH0870S10H08 85.6  MDH0880S10H03 31.4  MDH0880S10H05 58.4  MDH0880S10H08 85.4  MDH0890S10H03 31.3  MDH0890S10H05 58.3  MDH0890S10H08 85.3  MDH0900S10H03 31.1  MDH0900S10H05 58.1  MDH0900S10H08 85.1  MDH0910S10H03 35.6  MDH0910S10H05 64.1  MDH0910S10H08 91.1  MDH0920S10H03 35.4  MDH0920S10H05 63.9  MDH0920S10H08 90.9  MDH0930S10H03 35.3  MDH0930S10H05 63.8  MDH0930S10H08 90.8  MDH0940S10H03 35.1  MDH0940S10H05 63.6  MDH0940S10H08 90.6  MDH0950S10H03 35.0  MDH0950S10H05 63.5  MDH0950S10H08 90.5  MDH0960S10H03 37.4  MDH0960S10H05 67.4  MDH0960S10H08 97.4  MDH0970S10H03 37.3  MDH0970S10H05 67.3  MDH0970S10H08 97.3  MDH0980S10H03 37.1  MDH0980S10H05 67.1  MDH0980S10H08 97.1  MDH0990S10H03 37.0  MDH0990S10H05 67.0  MDH0990S10H08 97.0  MDH1000S10H03 36.8  MDH1000S10H05 66.8  MDH1000S10H08 96.8  MDH1010S12H03 39.3  MDH1010S12H05 70.8  MDH1020S12H03 39.1  MDH1020S12H05 70.6  MDH1030S12H03 39.0  MDH1030S12H05 70.5  MDH1040S12H03 38.8  MDH1040S12H05 70.3  MDH1050S12H03 38.7  MDH1050S12H05 70.2

1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.9 1.9

3/8-16

3/8-24

3.5866 104.7 4.1220 167.7 6.6024

1.3937 2.5157

1.9370 107.7 4.2402 3.0591 137.7 5.4213

49.2 77.7

3.5787 104.7 4.1220 167.7 6.6024

1.3898 2.5118

1.9370 107.7 4.2402 3.0591 137.7 5.4213

49.2 77.7

3.5748 104.7 4.1220 167.7 6.6024

1.3819 2.5039

1.9370 107.7 4.2402 3.0591 137.7 5.4213

49.2 77.7

3.5669 104.7 4.1220 167.7 6.6024

1.3780 2.5000

1.9370 107.7 4.2402 3.0591 137.7 5.4213

49.2 77.7

M10x1.25

3.5630 104.7 4.1220 167.7 6.6024

1.4724 2.6535

2.0394 107.8 4.2441 3.2205 137.8 5.4252

51.8 81.8

3.8346 111.8 4.4016 167.8 6.6063

1.4685 2.6496

2.0394 107.8 4.2441 3.2205 137.8 5.4252

51.8 81.8

M10x.75

3.8307 111.8 4.4016 167.8 6.6063

1.4606 2.6417

2.0394 107.8 4.2441 3.2205 137.8 5.4252

51.8 81.8

3.8228 111.8 4.4016 167.8 6.6063

1.4567 2.6378

2.0394 107.8 4.2441 3.2205 137.8 5.4252

51.8 81.8

3.8189 111.8 4.4016 167.8 6.6063

1.4488 2.6299

2.0394 107.8 4.2441 3.2205 137.8 5.4252

51.8 81.8

3.8110 111.8 4.4016 167.8 6.6063

1.5472 2.7874

2.1417 117.9 4.6417 3.3819 150.9 5.9409

54.4 85.9

8  MDH1010S12H08 100.8 3.9685 115.9 4.5630 183.9 7.2402 1.9

3 5

1.5394 2.7795

2.1417 117.9 4.6417 3.3819 150.9 5.9409

54.4 85.9

1.9 1.9

8  MDH1020S12H08 100.6 3.9606 115.9 4.5630 183.9 7.2402 1.9

3 5

1.5354 2.7756

2.1417 117.9 4.6417 3.3819 150.9 5.9409

54.4 85.9

1.9 1.9

8  MDH1030S12H08 100.5 3.9567 115.9 4.5630 183.9 7.2402 1.9

3 5

1.5276 2.7677

2.1417 117.9 4.6417 3.3819 150.9 5.9409

54.4 85.9

1.9 1.9

Dimensions ( mm ) 8  MDH1040S12H08 100.3 3.9488 115.9 4.5630 183.9 7.2402 1.9

3 5

1.5236 2.7638

2.1417 117.9 4.6417 3.3819 150.9 5.9409

54.4 85.9

1.9 1.9

7/16-20

8  MDH1050S12H08 100.2 3.9449 115.9 4.5630 183.9 7.2402 1.9

 : Worldwide Warehouse Item

Coated Carbide Drills for Steel & Cast Iron MDH Series

- Metric Availability

Carbon Steel/ Alloy Steel up to 0.28%

Carbon Steel/ Alloy Steel from 0.29%

Coat HF

Tempered Steel

Ductile Cast Iron

Cast Iron

For fitting tolerances, refer to the General Catalog [Chapter N References].

This PDF shows MDH Availability - Metric Only. Inch MDH lineup expansion is coming soon!

Fig 1

LCF

OAL

¢ Diameter ø10.6 to 12.4mm

Dimensions ( mm )

Roll Form Tap Size

Dia. DC

Hole Depth (L/D)

Effective Length Flute Length Overall Length

Tip PL

Shank Dia.

Cat. No.

Fig

LCF

OAL

DCON

mm Inch

Inch

mm 55.0 88.0

mm 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0

10.6 0.4173 10.6 0.4173 10.6 0.4173 10.7 0.4213 10.7 0.4213 10.7 0.4213 10.8 0.4252 10.8 0.4252 10.8 0.4252 10.9 0.4291 10.9 0.4291 10.9 0.4291 11.0 0.4331 11.0 0.4331 11.0 0.4331 11.1 0.4370 11.1 0.4370 11.1 0.4370 11.2 0.4409 11.2 0.4409 11.2 0.4409 11.3 0.4449 11.3 0.4449 11.3 0.4449 11.4 0.4488 11.4 0.4488 11.4 0.4488 11.5 0.4528 11.5 0.4528 11.5 0.4528 11.6 0.4567 11.6 0.4567 11.6 0.4567 11.7 0.4606 11.7 0.4606 11.7 0.4606 11.8 0.4646 11.8 0.4646 11.8 0.4646 11.9 0.4685 11.9 0.4685 11.9 0.4685 12.0 0.4724 12.0 0.4724 12.0 0.4724 12.1 0.4764 12.1 0.4764 12.1 0.4764 12.2 0.4803 12.2 0.4803 12.2 0.4803 12.3 0.4843 12.3 0.4843 12.3 0.4843 12.4 0.4882 12.4 0.4882 12.4 0.4882 Grade: ACH70

3 5

1.5394 2.8386

2.1654 118.0 4.6457 3.4646 151.0 5.9449

0.0787 0.0787 0.0787 0.0787 0.0787 0.0787 0.0787 0.0787 0.0787 0.0787 0.0787 0.0787 0.0787 0.0787 0.0787 0.0827 0.0827 0.0827 0.0827 0.0827 0.0827 0.0827 0.0827 0.0827 0.0827 0.0827 0.0827 0.0827 0.0827 0.0827 0.0866 0.0866 0.0866 0.0866 0.0866 0.0866 0.0866 0.0866 0.0866 0.0866 0.0866 0.0866 0.0866 0.0866 0.0866 0.0906 0.0906 0.0906 0.0906 0.0906 0.0906 0.0906 0.0906 0.0906 0.0906 0.0906 0.0906

0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.4724 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1

 MDH1060S12H03 39.1  MDH1060S12H05 72.1  MDH1070S12H03 39.0  MDH1070S12H05 72.0  MDH1080S12H03 38.8  MDH1080S12H05 71.8  MDH1090S12H03 38.7  MDH1090S12H05 71.7  MDH1100S12H03 38.5  MDH1100S12H05 71.5

2.0 2.0

M11x1

8  MDH1060S12H08 105.1 4.1378 121.0 4.7638 184.0 7.2441 2.0

3 5

1.5354 2.8346

2.1654 118.0 4.6457 3.4646 151.0 5.9449

55.0 88.0

2.0 2.0

8  MDH1070S12H08 105.0 4.1339 121.0 4.7638 184.0 7.2441 2.0

3 5

1.5276 2.8268

2.1654 118.0 4.6457 3.4646 151.0 5.9449

55.0 88.0

2.0 2.0

8  MDH1080S12H08 104.8 4.1260 121.0 4.7638 184.0 7.2441 2.0

3 5

1.5236 2.8228

2.1654 118.0 4.6457 3.4646 151.0 5.9449

55.0 88.0

2.0 2.0

8  MDH1090S12H08 104.7 4.1220 121.0 4.7638 184.0 7.2441 2.0

3 5

1.5157 2.8150

2.1654 118.0 4.6457 3.4646 151.0 5.9449

55.0 88.0

2.0 2.0

8  MDH1100S12H08 104.5 4.1142 121.0 4.7638 184.0 7.2441 2.0

3 5

1.6929 3.0512

2.3465 124.1 4.8858 3.7047 160.1 6.3031

59.6 94.1

2.1 2.1

 MDH1110S12H03

 MDH1110S12H05 77.5

8  MDH1110S12H08 110.5 4.3504 127.1 5.0039 196.1 7.7205 2.1

3 5

1.6850 3.0433

2.3465 124.1 4.8858 3.7047 160.1 6.3031

 MDH1120S12H03 42.8  MDH1120S12H05 77.3  MDH1130S12H03 42.7  MDH1130S12H05 77.2

59.6 94.1

2.1 2.1

8  MDH1120S12H08 110.3 4.3425 127.1 5.0039 196.1 7.7205 2.1

1.6811 3.0394

2.3465 124.1 4.8858 3.7047 160.1 6.3031

3 5

59.6 94.1

2.1 2.1

M12x1.5 M12x1.75

8  MDH1130S12H08 110.2 4.3386 127.1 5.0039 196.1 7.7205 2.1

3 5 8 3 5

1.6732 3.0315

2.3465 124.1 4.8858 3.7047 160.1 6.3031

 MDH1140S12H03 42.5

59.6 94.1

2.1 2.1 2.1 2.1 2.1

 MDH1140S12H05  MDH1140S12H08

4.3307 127.1 5.0039 196.1 7.7205

110

1.6693 3.0276

2.3465 124.1 4.8858 3.7047 160.1 6.3031

 MDH1150S12H03 42.4  MDH1150S12H05 76.9  MDH1160S12H03 44.8  MDH1160S12H05 80.8  MDH1170S12H03 44.7  MDH1170S12H05 80.7  MDH1180S12H03 44.5  MDH1180S12H05 80.5  MDH1190S12H03 44.4  MDH1190S12H05 80.4  MDH1200S12H03 44.2  MDH1200S12H05 80.2  MDH1210S14H03 46.7  MDH1210S14H05 84.2  MDH1220S14H03 46.5  MDH1220S14H05 84.0  MDH1230S14H03 46.4  MDH1230S14H05 83.9  MDH1240S14H03 46.2  MDH1240S14H05 83.7

59.6 94.1

M12x1.25

8  MDH1150S12H08 109.9 4.3268 127.1 5.0039 196.1 7.7205 2.1

3 5

1.7638 3.1811

2.4488 124.2 4.8898 3.8661 160.2 6.3071

62.2 98.2

2.2 2.2

M12x1

8  MDH1160S12H08 116.8 4.5984 134.2 5.2835 196.2 7.7244 2.2

3 5

1.7598 3.1772

2.4488 124.2 4.8898 3.8661 160.2 6.3071

62.2 98.2

2.2 2.2

8  MDH1170S12H08 116.7 4.5945 134.2 5.2835 196.2 7.7244 2.2

3 5

1.7520 3.1693

2.4488 124.2 4.8898 3.8661 160.2 6.3071

62.2 98.2

2.2 2.2

1/2-13

8  MDH1180S12H08 116.5 4.5866 134.2 5.2835 196.2 7.7244 2.2

3 5

1.7480 3.1654

2.4488 124.2 4.8898 3.8661 160.2 6.3071

62.2 98.2

2.2 2.2

8  MDH1190S12H08 116.4 4.5827 134.2 5.2835 196.2 7.7244 2.2

3 5

1.7402 3.1575

2.4488 124.2 4.8898 3.8661 160.2 6.3071

62.2 98.2

2.2 2.2

8  MDH1200S12H08 116.2 4.5748 134.2 5.2835 196.2 7.7244 2.2

3 5

1.8386

2.5512 130.3 5.1299

64.8

2.3 2.3

3.3150 102.3 4.0276 169.3 6.6654

8  MDH1210S14H08 120.2 4.7323 138.3 5.4449 208.3 8.2008 2.3

3 5

1.8307

2.5512 130.3 5.1299

64.8

2.3 2.3

3.3071 102.3 4.0276 169.3 6.6654

8  MDH1220S14H08 120.0 4.7244 138.3 5.4449 208.3 8.2008 2.3

3 5

1.8268

2.5512 130.3 5.1299

64.8

2.3 2.3

3.3031 102.3 4.0276 169.3 6.6654

8  MDH1230S14H08 119.9 4.7205 138.3 5.4449 208.3 8.2008 2.3

3 5

1.8189

2.5512 130.3 5.1299

64.8

2.3 2.3

3.2953 102.3 4.0276 169.3 6.6654

8  MDH1240S14H08 119.7 4.7126 138.3 5.4449 208.3 8.2008 2.3

 : Worldwide Warehouse Item

Coated Carbide Drills for Steel & Cast Iron MDH Series

Carbon Steel/ Alloy Steel up to 0.28%

Carbon Steel/ Alloy Steel from 0.29%

Coat HF

- Metric Availability

Tempered Steel

Ductile Cast Iron

Cast Iron

For fitting tolerances, refer to the General Catalog [Chapter N References].

This PDF shows MDH Availability - Metric Only. Inch MDH lineup expansion is coming soon!

Fig 1

LCF

OAL

¢ Diameter ø12.5 to 14.0mm

Dimensions ( mm )

Roll Form Tap Size

Dia. DC

Hole Depth (L/D)

Effective Length Flute Length Overall Length

Tip PL

Shank Dia.

Cat. No.

Fig

LCF

OAL

DCON

mm Inch

Inch

mm 64.8

mm 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0

12.5 0.4921 12.5 0.4921 12.5 0.4921 12.6 0.4961 12.6 0.4961 12.7 0.5000 12.7 0.5000 12.8 0.5039 12.8 0.5039 12.9 0.5079 12.9 0.5079 13.0 0.5118 13.0 0.5118 13.0 0.5118 13.1 0.5157 13.1 0.5157 13.2 0.5197 13.2 0.5197 13.3 0.5236 13.3 0.5236

3 5

1.8150

2.5512 130.3 5.1299

0.0906 0.0906 0.0906 0.0945 0.0945 0.0945 0.0945 0.0945 0.0945 0.0945 0.0945 0.0945 0.0945 0.0945 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984 0.0984

0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1 0.5512 1

 MDH1250S14H03 46.1  MDH1250S14H05 83.6  MDH1260S14H03 46.5  MDH1260S14H05 85.5  MDH1270S14H03 46.4  MDH1270S14H05 85.4  MDH1280S14H03 46.2  MDH1280S14H05 85.2  MDH1290S14H03 46.1  MDH1290S14H05 85.1  MDH1300S14H03 45.9  MDH1300S14H05 84.9  MDH1310S14H03 50.4  MDH1310S14H05 90.9  MDH1320S14H03 50.2  MDH1320S14H05 90.7  MDH1330S14H03 50.1  MDH1330S14H05 90.6  MDH1340S14H03 49.9  MDH1340S14H05 90.4  MDH1350S14H03 49.8  MDH1350S14H05 90.3  MDH1360S14H03 52.1  MDH1360S14H05 94.1  MDH1370S14H03 52.0  MDH1370S14H05 94.0  MDH1380S14H03 51.8  MDH1380S14H05 93.8  MDH1390S14H03 51.7  MDH1390S14H05 93.7  MDH1400S14H03 51.5  MDH1400S14H05 93.5

2.3 2.3

3.2913 102.3 4.0276 169.3 6.6654

8  MDH1250S14H08 119.6 4.7087 138.3 5.4449 208.3 8.2008 2.3

3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5

1.8307

2.5748 130.4 5.1339

65.4

2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5

3.3661 104.4 4.1102 169.4 6.6693

1.8268

2.5748 130.4 5.1339

65.4

3.3622 104.4 4.1102 169.4 6.6693

1.8189

2.5748 130.4 5.1339

65.4

3.3543 104.4 4.1102 169.4 6.6693

1.8150

2.5748 130.4 5.1339

65.4

3.3504 104.4 4.1102 169.4 6.6693

1.8071

2.5748 130.4 5.1339

65.4

3.3425 104.4 4.1102 169.4 6.6693

8  MDH1300S14H08 123.9 4.8780 143.4 5.6457 208.4 8.2047 2.4

1.9843

2.7559 136.5 5.3740

70.0

3.5787 110.5 4.3504 178.5 7.0276

1.9764

2.7559 136.5 5.3740

70.0

3.5709 110.5 4.3504 178.5 7.0276

1.9724

2.7559 136.5 5.3740

70.0

M14x1.5

3.5669 110.5 4.3504 178.5 7.0276

13.4 0.5276 9/16-12 M14x1.25 13.4 0.5276

1.9646

2.7559 136.5 5.3740

70.0

3.5591 110.5 4.3504 178.5 7.0276

1.9606

2.7559 136.5 5.3740

Grade: ACH70 14.0 0.5512 14.0 0.5512 13.8 0.5433 13.9 0.5472 13.9 0.5472 14.0 0.5512 13.5 0.5315 13.5 0.5315 13.5 0.5315 13.6 0.5354 13.6 0.5354 13.7 0.5394 13.7 0.5394 13.8 0.5433

70.0

3.5551 110.5 4.3504 178.5 7.0276

8  MDH1350S14H08 129.3 5.0906 149.5 5.8858 220.5 8.6811 2.5

2.0512

2.8543 136.5 5.3740

72.5

3.7047 114.5 4.5079 178.5 7.0276

2.0472

2.8543 136.5 5.3740

72.5

9/16-18

3.7008 114.5 4.5079 178.5 7.0276

2.0394

2.8543 136.5 5.3740

72.5

3.6929 114.5 4.5079 178.5 7.0276

2.0354

2.8543 136.5 5.3740

72.5

3.6890 114.5 4.5079 178.5 7.0276

2.0276

2.8543 136.5 5.3740

72.5

3.6811 114.5 4.5079 178.5 7.0276

8  MDH1400S14H08 135.5 5.3346 156.5 6.1614 220.5 8.6811 2.5

 : Worldwide Warehouse Item

Coated Carbide Drills for Steel & Cast Iron MDH Series ¢ Recommended Cutting Conditions

Mild/Low Carbon Steel A36 / 1015 ~160HB

Carbon Steel 1045 / 1050 ~230HB

Alloy Steel 8620 / 4138 20 to 38 HRC

Gray Cast Iron ~ 280HB

Ductile Cast Iron ~ 270HB

Work Material

Cutting Speed 200 to 550 SFM 200 to 525 SFM

200 to 450 SFM

200 to 475 SFM 200 to 400 SFM

Dia. (Inch / mm )

Feed Rate (IPR)

ø.1181 / ø 3.0 ø.1575 / ø4.0 ø.1968 / ø5.0 ø.2362 / ø6.0 ø.2755 / ø 7.0 ø.3149 / ø 8.0 ø.3543 / ø 9.0 ø.3937 / ø 10.0 ø.4331 / ø 11.0 ø.4724 / ø 12.0 ø.5118 / ø 13.0 ø.5512 / ø 14.0

.0047 to .0118 .0047 to .0118 .0047 to .0118 .0059 to .0138 .0059 to .0138

.0059 to .0138 .0059 to .0138 .0059 to .0138 .0059 to .0157 .0059 to .0138

.0059 to .0138 .0059 to .0138 .0059 to .0138 .0059 to .0177 .0059 to .0138

.0071 to .0157 .0071 to .0157 .0071 to .0157 .0071 to .0197 .0071 to .0157

.0071 to .0177 .0071 to .0177 .0071 to .0177 .0071 to .0216 .0071 to .0177

.0079 to .0197 .0079 to .0197 .0079 to .0177 .0079 to .0236 .0079 to .0197

.0079 to .0197 .0079 to .0197 .0079 to .0177 .0087 to .0255 .0087 to .0216

.0079 to .0216 .0079 to .0216 .0079 to .0197 .0087 to .0255 .0087 to .0216

.0079 to .0216 .0079 to .0216 .0079 to .0197 .0098 to .0275 .0098 to .0236

.0087 to .0236 .0087 to .0236 .0087 to .0216 .0098 to .0275 .0098 to .0236

.0087 to .0236 .0087 to .0236 .0087 to .0216 .0098 to .0295 .0098 to .0255

1. The recommended cutting conditions above are for cases where internal supply of a water-soluble coolant is used. 2. Can also be used for MQL drilling. 3. If using non-water-soluble coolant, reduce the cutting speed and feed rate by 20-30% and ensure that sufficient coolant is supplied. 4. When mounting the drill in the collet, make sure that runout around the cutting edge is no greater than .0008”. 5. Make sure the flute does not enter the collet. 6. If the surface of the workpiece is abnormally shaped (tilted, interrupted etc.), reduce the feed rate to about half when feeding the drill in the workpiece.

*If stable drilling is still not possible, pre-drilling of a flat surface with a MDF Series Flat Bottom Drill is recommended. 7. When performing interrupted through drilling, reduce the feed rate to about half the feed rate used prior to this process. 8. If abnormalities such as noise or vibration occur, change the cutting conditions accordingly.

Coated Carbide Drills for Steel & Cast Iron MDH Series

MULTIDRILL MDH Series Made-To-Order Request Sheet

LCF

OAL

¢ Equipment Information Manufacturer : Type : 

¢ Workpiece Shape

¨ Vertical Machining Center ¨ Horizontal Machining Center ¨ Lathe  

Spindle

: ¨ Water-soluble ¨ Oil-based ¨ MQL   

Coolant

Coolant Supply :

¨ Internal Coolant Supply ¨ External Coolant Supply  

¢ Workpiece Information Part Name :

Work Material :

Work Material Hardness:

: ¨ Through Hole ¨ Blind Hole  

Hole Type

Interrupted Drilling : ¨ Yes 

¨ No 

Hole Depth :

After filling in the required dimensions and other information, contact our nearest sales office or Sumitomo distributor. Feel free to contact us with other requests as well.

Step Part

¢ Required Precision Hole Dia. Tolerance:

Surface Roughness:

Hole Positioning Accuracy :

Other

Company Name/Contact

¢ Current Tool

Cutting Conditions : vc =

SFM

f =

IPR

Tool Life:

Tool Life Criteria: Chamfered Cutting Edge:

¢ Remarks

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