Socket Flat Head Screw Head Type Flat System of Measurement Inch Drive Type Hex Material Stainless Steel Material Grade/Class 316 Finish Plain Thread Size 5/16 In.-18 Minimum Thread Length 1 1/8 in Fastener Length 4 in Head Height 0.198 in Head Diameter 0.656 in Pack Size Small Pack Thread Style Partially Threaded Special Features Not Applicable Flange Diameter Not Applicable Flange Thickness Not Applicable Manufacturer Location Globally Sourced