440Pcs 22 Sizes,4#-40 to 1/4″-20 Standard SAE Allen Head Socket Hex Grub Screw A
440pcs Grade 12.9 Alloy Steel High Strength Cup Point Allen Head Socket Grub Set Screws- Standard SAE. Drive Type: Internal Hex DriveHead Style: Allen HeadSize:#4-40,#6-32,#8-32,#10-24,#10-32,1/4″-20Material: Quenching and Hardening Grade 12.9 Alloy Steel Standard type: SAE.