Sumitomo General Catalog 2025-2026

Micro Long Drills MLDH-L / MLDH-P (Internal Coolant Supply) Carbon Steel/ Alloy Steel up to 0.28% Carbon Steel/ Alloy Steel from 0.29% Tempered Steel Hardened Steel up to 45HRC Stainless Steel

Ductile Cast Iron

Aluminum Alloy

Ti Alloy Heat-resistant Steel

Cast Iron

Coolant Hole

Coat

Steel

Fig. 1 (MLDH-P Type)

Fig. 2 (MLDH-L Type)

LU

LU

PL

PL

LCF

LCF

OAL

OAL

Diameter ø0.80 to 0.90mm

Diameter ø0.91 to 1.05mm

Dimensions ( mm )

Dimensions ( mm )

J

Dia. DC

Hole Depth (L/D)

Effective Length LU

Flute Length LCF

Overall Length OAL

Tip PL

Shank Dia. DCON

Dia. DC

Hole Depth (L/D)

Effective Length LU

Flute Length LCF

Overall Length OAL

Tip PL

Shank Dia. DCON

Cat. No.

Fig

Cat. No.

Fig

2  MLDH0800P 5  MLDH0800L5 12  MLDH0800L12 20  MLDH0800L20 30  MLDH0800L30 2  MLDH0810P 5  MLDH0810L5 12  MLDH0810L12 20  MLDH0810L20 30  MLDH0810L30 2  MLDH0820P 5  MLDH0820L5 12  MLDH0820L12 20  MLDH0820L20 30  MLDH0820L30 2  MLDH0830P 5  MLDH0830L5 12  MLDH0830L12 20  MLDH0830L20 30  MLDH0830L30 2  MLDH0840P 5  MLDH0840L5 12  MLDH0840L12 20  MLDH0840L20 30  MLDH0840L30 2  MLDH0850P 5  MLDH0850L5 12  MLDH0850L12 20  MLDH0850L20 30  MLDH0850L30 2  MLDH0860P 5  MLDH0860L5 12  MLDH0860L12 20  MLDH0860L20 30  MLDH0860L30 2  MLDH0870P 5  MLDH0870L5 12  MLDH0870L12 20  MLDH0870L20 30  MLDH0870L30 2  MLDH0880P 5  MLDH0880L5 12  MLDH0880L12 20  MLDH0880L20 30  MLDH0880L30 2  MLDH0890P 5  MLDH0890L5 12  MLDH0890L12 20  MLDH0890L20 30  MLDH0890L30 2  MLDH0900P 5  MLDH0900L5 12  MLDH0900L12 20  MLDH0900L20 30  MLDH0900L30

2  MLDH0910P 5  MLDH0910L5 12  MLDH0910L12 20  MLDH0910L20 30  MLDH0910L30 2  MLDH0920P 5  MLDH0920L5 12  MLDH0920L12 20  MLDH0920L20 30  MLDH0920L30 2  MLDH0930P 5  MLDH0930L5 12  MLDH0930L12 20  MLDH0930L20 30  MLDH0930L30 2  MLDH0940P 5  MLDH0940L5 12  MLDH0940L12 20  MLDH0940L20 30  MLDH0940L30 2  MLDH0950P 5  MLDH0950L5 12  MLDH0950L12 20  MLDH0950L20 30  MLDH0950L30 2  MLDH0960P 5  MLDH0960L5 12  MLDH0960L12 20  MLDH0960L20 30  MLDH0960L30 2  MLDH0970P 5  MLDH0970L5 12  MLDH0970L12 20  MLDH0970L20 30  MLDH0970L30 2  MLDH0980P 5  MLDH0980L5 12  MLDH0980L12 20  MLDH0980L20 30  MLDH0980L30 2  MLDH0990P 5  MLDH0990L5 12  MLDH0990L12 20  MLDH0990L20 30  MLDH0990L30 2  MLDH1000P 5  MLDH1000L5 12  MLDH1000L12 20  MLDH1000L20 30  MLDH1000L30 2  MLDH1050P 5  MLDH1050L5 12  MLDH1050L12 20  MLDH1050L20 30  MLDH1050L30

2.0 3.2 45 0.1

1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2

2.2 3.6 45 0.1

1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2 1 2 2 2 2

6.8 8 50.0 12.8 14 55 17.8 19 60 26.8 28 70

8.6 10 50.0 13.6 15 55 20.6 22 65 29.6 31 75

3.0

3.0

0.80

0.91

0.2

0.2

2.0 3.2 45 0.1

2.3 3.7 45 0.1

7.8 9 50.0 12.8 14 55 17.8 19 60 26.8 28 70

8.6 10 50.0 14.6 16 60 20.6 22 65 29.6 31 75

3.0

3.0

0.81

0.92

0.2

0.2

2.1 3.3 45 0.1

2.3 3.7 45 0.1

7.8 9 50.0 12.8 14 55 18.8 20 60 26.8 28 70

8.6 10 50.0 14.6 16 60 20.6 22 65 30.6 32 75

3.0

3.0

0.82

0.93

0.2

0.2

2.1 3.3 45 0.1

2.4 3.8 45 0.1

7.8 9 50.0 12.8 14 55 18.8 20 60 26.8 28 70

8.6 10 50.0 14.6 16 60 21.6 23 65 30.6 32 75 2.4 3.8 45 8.6 10 50.0 14.6 16 60 21.6 23 65 30.6 32 75 2.4 3.8 45 8.6 10 50.0 14.6 16 60 21.6 23 65 31.6 33 75 2.4 3.9 45 8.5 10 50.0 14.5 16 60 21.5 23 65 31.5 33 75 2.4 3.9 45 8.5 10 50.0 15.5 17 60 22.5 24 65 31.5 33 75 2.5 4 45 8.5 10 50.0 15.5 17 60 22.5 24 65 32.5 34 75 2.5 4 45 8.5 10 50.0 15.5 17 60 22.5 24 65 32.5 34 75 2.6 4.2 45 10.4 12 55.0 16.4 18 60 23.4 25 65 34.4 36 80

3.0

3.0

0.94

0.83

0.2

0.2

2.1 3.4 45 0.1

7.7 9 50.0 12.7 14 55 18.7 20 60 27.7 29 70

3.0

0.2 3.0

0.84

0.95

0.2

2.1 3.4 45 0.1

7.7 9 50.0 12.7 14 55 18.7 20 60 27.7 29 70

3.0

0.2 3.0

0.85

0.96

0.2

2.1 3.4 45 0.1

7.7 9 50.0 13.7 15 55 19.7 21 65 27.7 29 70

3.0

0.2 3.0

0.86

0.97

0.2

2.2 3.5 45 0.1

7.7 9 50.0 13.7 15 55 19.7 21 65 28.7 30 70

3.0

0.2 3.0

0.87

0.98

0.2

2.2 3.5 45 0.1

7.7 9 50.0 13.7 15 55 19.7 21 65 28.7 30 70

3.0

0.2 3.0

0.88

0.99

0.2

2.3 3.6 45 0.1

7.7 9 50.0 13.7 15 55 19.7 21 65 28.7 30 70

3.0

0.2 3.0

0.89

1.00

0.2

2.3 3.6 45 0.1

7.7 10 50.0 13.7 15 55 20.7 22 65 29.7 31 75

3.0

0.2 3.0

0.90

1.05

0.2

Part Number Suffix P: For Guide Hole Grade: ACV70

Part Number Suffix P: For Guide Hole Grade: ACV70

Made-to-order items: Inquire about production of drills in tool diameters and lengths that are not listed in the dimensions above, or not in stock.  : Worldwide Warehouse Item

J92

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