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Socket Head Cap Screws

Inch Socket Head Cap Screws

Screw Size Body Diameter Hex Key Size Head Height Head Diameter Max. Thread Length Min. Thread Length
No. 0 0.06 0.05 0.06 0.096  5⁄8  3⁄8
No. 1 0.073 1⁄16 0.073 0.118  7⁄8  3⁄8
No. 2 0.086  5⁄64 0.086 0.14  7⁄8  1⁄2
No. 3 0.099  5⁄64 0.099 0.161  7⁄8  1⁄2
No. 4 0.112  3⁄32 0.112 0.183  11⁄8  11⁄16
No. 5 0.125  3⁄32 0.125 0.205 1  11⁄16
No. 6 0.138  7⁄64 0.138 0.226  11⁄8  11⁄16
No. 8 0.164  9⁄64 0.164 0.27  11⁄4  3⁄4
No. 10 0.19  5⁄32 0.19 0.312  13⁄8  15⁄16
No. 12 0.216  5⁄32 0.216 0.345  11⁄4  15⁄16
1⁄4 0.250  3⁄16 1⁄4 3⁄8  11⁄2  15⁄16
5⁄16 0.3125 1⁄4 5⁄16 15⁄32 1-3⁄4 1-1⁄16
3⁄8 0.375 5⁄16 3⁄8 9⁄16 2 1-3⁄16
7⁄16 0.438 3⁄8 7⁄16 21⁄32 2-1⁄4 13⁄16
1⁄2 0.500 3⁄8 1⁄2 3⁄4 2-1⁄2 1-3⁄8
9⁄16 0.5625 7⁄16 9⁄16 27⁄32 2-7⁄16 1-5⁄8
5⁄8 0.625 1⁄2 5⁄8 15⁄16 3 1-5⁄8
3⁄4 0.750 5⁄8 3⁄4 11⁄8 3-1⁄2 1-7⁄8
7⁄8 0.875 3⁄4 7⁄8 15⁄16 3-3⁄4 2-1⁄16
1 1.000 3⁄4 1 11⁄2 4-1⁄2 2-1⁄4
1-1⁄8 1.125 7⁄8 1-1⁄8 111⁄16 4-21⁄32 2-13⁄16
1-1⁄4 1.250 7⁄8 1-1⁄4 17⁄8 5-3⁄32 3-1⁄8
1-1⁄2 1.500 1 1-1⁄2 21⁄4 6-5⁄64 3-3⁄4
1-3⁄4 1.750 11⁄4 1-3⁄4 25⁄8 7-1⁄8 4-3⁄8
2 2.000 11⁄2 2 3 8-7⁄64 5

Metric Socket Head Cap Screws

Screw Size Body Diameter Hex Key Size Head Height Head Diameter Max. Thread Length Min. Thread Length
M2 x 0.4 2.00 1.5 2.00 3.80 12 4
M2.5 x 0.45 2.50 2.0 2.36 4.32 12 5
M3 x 0.5 2.50 2.5 3.00 5.50 35 5
M4 x 0.7 4.00 3.0 4.00 7.00 50 6
M5 x 0.8 5.00 4.0 5.00 8.50 70 6
M6 x 1.0 6.00 5.0 6.00 10.00 110 8
M8 x 1.25 8.00 6.0 8.00 13.00 150 10
M10 x 1.5 10.00 8.0 10.00 16.00 150 10
M12 x 1.75 12.00 10.0 12.00 18.00 150 12
M16 x 2.0 16.00 14.0 16.00 24.00 180 25
M20 x 2.5 20.00 17.0 20.00 30.00 200 30
M24 x 3.0 24.00 19.0 24.00 36.00 260 40
M30 x 3.5 30.00 22.0 30.00 45.00 300 80
M36 x 4.0 36.00 27.0 26.00 54.00 260 80

 

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