Machine Screw Head Type Fillister Material Nylon Finish Plain Drive Slotted Thread Size #4-40 Fastener Length 3/16 in Head Width 0.172 in Head Height 0.094 in Tensile Strength 41 psi Pack Size Small Minimum Thread Length 3/16 in Type Standard Machine Screw Washer Outside Diameter Not Applicable Washer Thickness Not Applicable Maximum Head Width 0.172 in Minimum Head Width 0.175 in Maximum Head Height 0.094 in Minimum Head Height 0.098 in System of Measurement Inch