Socket Head Shoulder Screw Specifications

Head and Body Dimensions
Screw Diam. Shoulder Diameter Head Diameter Head Height Hex. Socket Size Threads
Per
Inch
Max. Min. Max. Min. Max. Min. Nom.
1/4 0.248 0.246 0.375 0.357 0.188 0.177 1/8 0.125 24
5/16 0.3105 0.3085 0.438 0.419 0.219 0.209 5/32 0.156 20
3/8 3730 3710 0.562 0.543 0.25 0.24 3/16 0.188 18
1/2 0.498 0.496 0.75 0.729 0.312 0.302 1/4 0.25 16
5/8 0.623 0.621 0.875 0.853 0.375 0.365 5/16 0.312 13
3/4 0.748 0.746 1 0.977 0.5 0.49 3/8 0.375 11
1 0.998 0.996 1.312 1.287 0.625 0.61 1/2 0.5 10
1-1/4 1.248 1.246 1.75 1.723 0.75 0.735 5/8 0.625 9