SIZE

DECIMAL EQUIV.

Diameter of Shank

Length Overall(in.)

Length Of Flute (in.)

1/32

0.0312

.0290-.0280

2-1/2

1/2

1MM

0.0394

.0350-.0340

2-1/2

1/2

3/64

0.0469

.0455-.0445

2-1/2

1/2

1.5MM

0.0591

.0585-.0575

2-1/2

1/2

1/16

0.0625

.0585-.0575

2-1/2

1/2

5/64

0.0781

.0720-.0710

3

3/4

2.0MM

0.0787

.0720-.0710

3

3/4

3/32

0.0938

.0880-.0870

3

3/4

2.5MM

0.0984

.0928-.0918

3-1/2

7/8

7/64

0.1094

.1030-.1020

3-1/2

7/8

3.0MM

0.1181

.1120-.1110

3-1/2

7/8

1/8

0.1250

.1190-.1180

3-1/2

7/8

3.5MM

0.1378

.1275-.1265

4

1

9/64

0.1406

.1350-.1340

4

1

5/32

0.1562

.1510-.1500

4

1

4.0MM

0.1575

.1510-.1500

4

1

11/64

0.1719

.1645-.1635

4-1/2

1-1/8

4.5MM

0.1772

.1704-.1694

4-1/2

1-1/8

3/16

0.1875

.1805-.1795

4-1/2

1-1/8

5.0MM

0.1968

.1895-.1885

5

1-1/4

13/64

0.2031

.1945-.1935

5

1-1/4

5.5MM

0.2165

.2075-.2065

5

1-1/4

7/32

0.2188

.2075-.2065

5

1-1/4

15/64

0.2344

.2265-.2255

6

1-1/2

6.0MM

0.2362

.2265-.2255

6

1-1/2

6.5MM

0.2559

.2405-.2395

6

1-1/2

17/64

0.2656

.2485-.2475

6

1-1/2

7.0MM

0.2756

.2485-.2475

6

1-1/2

9/32

0.2812

.2485-.2475

6

1-1/2

7.5MM

0.2953

.2792-.2782

6

1-1/2

19/64

0.2969

.2792-.2782

6

1-1/2

5/16

0.3125

.2792-.2782

6

1-1/2

8.0MM

0.3150

.2792-.2782

6

1-1/2

21/64

0.3281

.2792-.2782

6

1-1/2

8.5MM

0.3346

.2792-.2782

6

1-1/2

11/32

0.3438

.2792-.2782

6

1-1/2

9.0MM

0.3543

.3105-.3095

7

1-1/2

23/64

0.3594

.3105-.3095

7

1-1/2

9.5MM

0.3740

.3105-.3095

7

1-1/2

3/8

0.3750

.3105-.3095

7

1-1/2

25/64

0.3906

.3105-.3095

7

1-1/2

10.0MM

0.3937

.3105-.3095

7

1-1/2

13/32

0.4062

.3105-.3095

7

1-3/4

10.5MM

0.4134

.3730-.3720

7

1-3/4

27/64

0.4219

.3730-.3720

7

1-3/4

11.0MM

0.4331

.3730-.3720

7

1-3/4

7/16

0.4375

.3730-.3720

7

1-3/4

11.5MM

0.4528

.3730-.3720

7

1-3/4

29/64

0.4531

.3730-.3720

7

1-3/4

15/32

0.4688

.3730-.3720

7

1-3/4

12.0MM

0.4724

.4355-.4345

8

2

31/64

0.4844

.4355-.4345

8

2

12.5MM

0.4921

.4355-.4345

8

2

1/2

0.5000

.4355-.4345

8

2

13.0MM

0.5118

.4355-.4345

8

2

13.5MM

0.5315

.4355-.4345

8

2

14.0MM

0.5512

.4355-.4345

8

2

9/16

0.5625

.4355-.4345

8

2

14.5MM

0.5709

.4355-.4345

8

2

15.0MM

0.5906

.4355-.4345

8

2

19/32

0.5938

.4355-.4345

8

2

15.5MM

0.6102

.4355-.4345

9

2-1/4

5/8

0.6250

.5620-.5605

9

2-1/4

16.0MM

0.6299

.5620-.5605

9

2-1/4

16.5MM

0.6496

.5620-.5605

9

2-1/4

21/32

0.6562

.5620-.5605

9

2-1/4

17.0MM

0.6693

.5620-.5605

9

2-1/4

11/16

0.6875

.5620-.5605

9

2-1/4

17.5MM

0.6890

.5620-.5605

9

2-1/4

18.0MM

0.7087

.5620-.5605

9

2-1/4

23/32

0.7188

.5620-.5605

9

2-1/4

18.5MM

0.7283

.6245-.6230

9-1/2

2-1/2

19.0MM

0.7480

.6245-.6230

9-1/2

2-1/2

3/4

0.7500

.6245-.6230

9-1/2

2-1/2

19.5MM

0.7677

.6245-.6230

9-1/2

2-1/2

25/32

0.7812

.6245-.6230

9-1/2

2-1/2

20.0MM

0.7874

.6245-.6230

9-1/2

2-1/2

20.5MM

0.8071

.6245-.6230

9-1/2

2-1/2

13/16

0.8125

.6245-.6230

9-1/2

2-1/2

21.0MM

0.8268

.6245-.6230

9-1/2

2-1/2

27/32

0.8438

.6245-.6230

9-1/2

2-1/2

21.5MM

0.8465

.6245-.6230

9-1/2

2-1/2

22.0MM

0.8661

.7495-.7480

10

2-5/8

7/8

0.8750

.7495-.7480

10

2-5/8

22.5MM

0.8858

.7495-.7480

10

2-5/8

23.0MM

0.9055

.7495-.7480

10

2-5/8

29/32

0.9062

.7495-.7480

10

2-5/8

23.5MM

0.9252

.7495-.7480

10

2-5/8

15/16

0.9375

.7495-.7480

10

2-5/8

24.0MM

0.9449

.7495-.7480

10

2-5/8

24.5MM

0.9646

.7495-.7480

10

2-5/8

31/32

0.9688

.7495-.7480

10

2-5/8

25.0MM

0.9843

.8745-.8730

10-1/2

2-3/4

1

1.0000

.8745-.8730

10-1/2

2-3/4

1-1/16

1.0625

.8745-.8730

10-1/2

2-3/4

1-1/8

1.1250

.8745-.8730

11

2-7/8

1-3/16

1.1875

.9995-.9980

11

2-7/8

1-1/4

1.2500

.9995-.9980

11-1/2

3

1-5/16

1.3125

.9995-.9980

11-1/2

3

1-3/8

1.3750

.9995-.9980

12

3-1/4

1-7/16

1.4375

1.2495-1.248

12

3-1/4

1-1/2

1.5000

1.2495-1.248

12-1/2

3-1/2