Machine Screw Head Type Flat Material Steel Finish Zinc Plated Drive Slotted Thread Size 3/8 In.-16 Fastener Length 4 in Head Width 0.717 in Head Height 0.717 in 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 0.717 in Minimum Head Width 0.67 in Maximum Head Height 0.717 in