Socket Head Machine Cap Screw

4-40

6-32

5-40

8-32

10-32

Our Socket Head Machine Screws are the strongest screws we offer. They are heat treated, have a black-oxide finish and exceed Grade 8 standards. These are the same screws that are supplied in our mechanical kits. Click on the picture for further information including schematics of each size.

Click on the picture for further information.

2-56

Socket Head Cap Screws:
2-56 = 5/64” Hex Key
4-40 = 3/32” Hex Key
5-40 = 3/32” Hex Key
6-32 = 7/64” Hex Key
8-32 = 9/64” Hex Key
10-32 = 5/32” Hex Key
1/4-20 = 3/16” Hex Key

Hex Keys
(click here)

1/4-20