Mechanical and Quality Requirements for Machine Screws
This SAE Standard covers the mechanical and quality requirements for two grades of carbon steel, slotted and recessed, 82 degree flat countersunk, 82 degree oval countersunk, pan, fillister, hex, and hex washer head machine screws in sizes No. 4 through 3/4 in. for use in automotive and related industries. The dimensions of these screws are covered in ASME B.18.6.3.