7Leaders

Jobber Drills 118° Point for Quick Penetration

Uncoated Bright

MG Carbide

30°

Code No: D453-DC

Work Material P H M K N S

Lc

L

118˚

Standard Length

P Steel

Bright D453

Dec. Equiv. Inch

Lc Inch 3/16 5/16

L Inch

Dc h7

1/64 1/32 3/64 1/16 5/64 3/32 7/64

0.0156 0.0312 0.0469 0.0625 0.0781 0.0938 0.1094 0.1250 0.1406 0.1562 0.1719 0.1875 0.2031 0.2188 0.2344 0.2500 0.2656 0.2812 0.2969 0.3125 0.3281 0.3438 0.3594 0.3750 0.3906 0.4062 0.4219 0.4375 0.4531 0.4688 0.4844 0.5000 0.5312 0.5625 0.6250 0.7500 0.0135 0.0145

3/4

K Cast Iron

1-1/4 1-1/2 1-1/2 1-3/4

3/4 3/4 7/8

N Aluminium

N Copper

1

2

1-1/4 2-1/4 1-1/4 2-1/4 1-3/8 2-1/2 1-3/8 2-1/2 1-5/8 2-3/4 1-5/8 2-3/4

N Plastics

1/8

9/64 5/32

N FRP CFRP

Composite Material

11/64

3/16

Tolerance: DC All Sizes: h7 Feature of product: Provide superior wear resistance. Use in lower tensile strength materials such as Cast Iron, Cast Aluminium, Bronze, Copper, Zinc, Brass, Rubber and Plastics, Composite…etc. Also can be applied for drilling with Steel as work material.

13/64

1-3/4 1-3/4

3 3

7/32

15/64

2 2

3-1/4 3-1/4

1/4

17/64

2-1/8 3-1/2 2-1/8 3-1/2 2-3/8 3-3/4 2-3/8 3-3/4

9/32

19/64

5/16

21/64 11/32 23/64

2-1/2 2-1/2

4 4

2-1/2 4-1/4 2-3/4 4-1/4 2-7/8 4-1/2 2-7/8 4-1/2 2-7/8 4-1/2 2-7/8 4-1/2

3/8

25/64 13/32 27/64

7/16

29/64 15/32 31/64

3 3 3 3

4-3/4 4-3/4 4-3/4 4-3/4

1/2

17/32

3-1/4 3-1/4

5 5

9/16

5/8 3/4

3-1/2 5-1/4 3-7/8 5-3/4

#80 #79

3/16 3/16

3/4 3/4

367

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