Item Specifications UPC 842176174457 Package Quantity 10 Size 5/16"-18 x 3/4" Head Style Flat Counter Sink Angle 82 Degree Head Diameter 0.597" Head Height 0.191" Drive Style Slotted Inch / Metric Inch Thread Size 5/16"-18 Thread Dia. 0.3125" Thread Class Class 2A Coarse / Fine Coarse Threads Per Inch (TPI) 18 Thread Coverage Full Thread Length 3/4" Thread Length Dec. 0.559" Material Brass Finish Plain Specification 1 ASME : B18.6.3 Tensile Strength 50,000 PSI Core Hardness Rockwell B50 Item Type Machine Screws Product Code 5150-27945 SKU 3RSMSF95C012