Sprocket Catalog

STANDARD KEYWAYS & SET SCREWS

All dimensions are in inches unless otherwise indicated.

“Inch” Standard Keyways and Set Screw

“Metric” Standard Keyways and Set Screw Shaft Diameter (mm) From Including Keyway (mm) Width Depth Key (mm) Width Depth

Shaft Diameter (in.) From To

Keyway (in.) Width Depth

Key (in.) Width Depth

Set Screw Diameter

5/16

7/16 9/16

3/32

3/64 1/16 3/32

3/32

3/32

8-32 1-24

6 8

8

2 3 4 5 6 8

1

2 3 4 5 6 8

2 3 4 5 6 7 8 8 9

1/2 5/8

1/8

1/8

1/8

10 12 17 22 30 38 44 50 58 65 75 85 95

1.4 1.8 2.3 2.8 3.3 3.3 3.3 3.8 4.3 4.4 4.9 5.4 5.4 6.4 7.4 8.4

7/8

3/16

3/16

3/16

1/4

10 12 17 22 30 38 44 50 58 65 75 85 95

15/16 1-5/16 1-7/16 1-13/16 2-5/16 2-13/16 3-5/16 3-13/16 4-9/16 5-9/16 6-9/16

1-1/4 1-3/8 1-3/4 2-1/4 2-3/4 3-1/4 3-3/4 4-1/2 5-1/2 6-1/2 7-1/2

1/4

1/8

1/4

1/4

5/16 5/16

5/16

5/32 3/16

5/16

5/16

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

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

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

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

1/4

10 12 14 16 18 20 22 25 28 32 36

10 12 14 16 18 20 22 25 28 32 36

5/16

3/8

7/16

10 11 12 14 14 16 18 20

1

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

1

1

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

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

1 1 1 1

7-9/16 8-15/16

2

1

2

1-1/2

110 130 150

9

10-15/16 2-1/2 1-1/4 2-1/2 1-3/4

110 130

Knurled Cup Point Set Screws

Inch Cup Point Set Screw

Metric Cup Point Set Screw

Nominal Size

Tightening Torque (In-Lbs.)

Nominal Size

Tightening Torque (Nm) (In-Lbs.)

0 1 2 3 4 5 6 8

1.1 2.1 2.1 6.0 6.0

1.6

0.1 0.2 0.6 1.0 2.1 4.7 7.7

0.89 1.77 5.31 8.85

2

2.5

3 4 5 6 8

18.59 41.60 68.15

11 11 23 40 94

17.8 35.0 55.0 125 250 425

158 310 487

10

10 12 16 20 24

1/4

5/16

183 317 502 750

1106 2213 3762

3/8

7/16

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

1460 2520 5720 8000

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