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Reduced shank drill bit

Product Detail

SILVER & DEMING DRILL(S&D) ,REDUCED SHANK DRILL BITS

  Silver & deming drill bits are designed with 1 / 2 " shanks with 3 flats, to fit 1 / 2 " drill chucks. silver & deming drill bits are used in both drill presses and portable drills where the drill diameter is larger than chuck available. Silver & deming drill bits are provided with a Black-Oxide treatment for abrasion resistance and helps to prevent chip welding.


Nominal diameter 
Dh8 
mm

Overall length 

mm

Flute length 

mm

13.00

152.40

76.20

13.50

152.40

76.20

14.00

152.40

76.20

14.50

152.40

76.20

15.00

152.40

76.20

15.50

152.40

76.20

16.00

152.40

76.20

16.50

152.40

76.20

17.00

152.40

76.20

17.50

152.40

76.20

18.00

152.40

76.20

18.50

152.40

76.20

19.00

152.40

76.20

19.50

152.40

76.20

20.00

152.40

76.20

21.00

152.40

76.20

22.00

152.40

76.20

23.00

152.40

76.20

24.00

152.40

76.20

25.00

152.40

76.20

26.00

152.40

76.20

27.00

152.40

76.20

28.00

152.40

76.20

29.00

152.40

76.20

30.00

152.40

76.20

31.00

152.40

76.20

32.00

152.40

76.20

33.00

152.40

76.20

34.00

152.40

76.20

35.00

152.40

76.20

36.00

152.40

76.20

37.00

152.40

76.20

38.00

152.40

76.20

Nominal diameter 
Dh8 
inch

Overall length 

inch

Flute length 

inch

17/32

6

3

9/16

6

3

19/32

6

3

5/8

6

3

21/32

6

3

11/16

6

3

23/32

6

3

3/4

6

3

25/32

6

3

13/16

6

3

27/32

6

3

7/8

6

3

29/32

6

3

15/16

6

3

31/32

6

3

1

6

3

1 1/16

6

3

1 1/8

6

3

1 3/16

6

3

1 1/4

6

3

1 3/8

6

3

1 1/2

6

3


Reduced shank drill bit
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E-mail : frankpan@scharptools.com

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