Machine Screw Head Type Pan Material PEEK Finish Plain Drive Slotted Thread Size 5/16 In.-18 Fastener Length 2 1/4 in Head Width 0.605 in Head Height 0.17 in Tensile Strength 26 800 psi Dimensional Standards ISO 9001 2008 Pack Size Small Type Standard Machine Screw System of Measurement Inch Thread Style Fully Threaded Thread Type Coarse Package Quantity 10