Thumb Screw Type S Type Thumb Screw Finish Plain Material 18-8 Stainless Steel Thread Size 1/4 In.-20 Fastener Length 1/2 in Head Width 0.516 in Head Height 0.594 in Tensile Strength - Head Type Spade Maximum Head Height 0.594 in System of Measurement Inch Head Material 18-8 Stainless Steel Head Shape Spade Package Quantity 5