Thumb Screw Grip Style Knurled Type Thumb Screw Finish Plain Material 18-8 Stainless Steel Thread Size 1/4 In.-20 Fastener Length 1 in Head Width 0.25 in Head Height 0.25 in Tensile Strength 80 000 psi Head Type Knurled Maximum Head Height 0.25 in System of Measurement Inch Head Material 18-8 Stainless Steel Package Quantity 5