Machine Screw Head Type Truss Material 18-8 Stainless Steel Finish Plain Drive Slotted Thread Size 1/4 In.-20 Fastener Length 3/4 in Head Width 0.477 in Head Height 0.15 in Tensile Strength 60 000 psi Dimensional Standards ASME B18.6.3 Pack Size Small Minimum Thread Length 23/32 in Type Standard Machine Screw Maximum Head Width 0.477 in Minimum Head Width 0.442 in Maximum Head Height 0.15 in Minimum Head Height 0.133 in System of Measurement Inch Thread Style Fully Threaded