Machine Screw Head Type Hex Material Steel Finish Zinc Plated Drive External Hex Thread Size #10-32 Fastener Length 3/8 in Head Width 0.312 in Head Height 0.12 in Drive Size 5/16 in Dimensional Standards ASME B18.13 Pack Size Small Type Machine Screw Washer Outside Diameter 0.381 in Washer Thickness 0.025 in System of Measurement Inch Thread Type Fine Package Quantity 100