Machine Screw Head Type Round Material Steel Finish Zinc Plated Drive Combination Slotted/Phillips Thread Size #12-24 Fastener Length 1 in Head Width 0.412 in Head Height 0.153 in Drive Size #3 Tensile Strength 60 000 psi Dimensional Standards ASME B18.6.3 Pack Size Small Minimum Thread Length Not Applicable Type Standard Machine Screw Washer Outside Diameter Not Applicable Washer Thickness Not Applicable Maximum Head Width 0.412 in Minimum Head Width 0.38 in