Item Specifications UPC 842176154978 Package Quantity 10 Size 5/16"-18 x 2-1/4" Head Style Pan Head Diameter 0.615" Head Height 0.218" Drive Style Phillips Drive Size #4 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 2-1/4" Thread Length Dec. 2.25" Material Stainless Steel 18-8 Finish Plain Specification 1 ASME : B18.6.3 Tensile Strength 70,000 PSI Core Hardness Rockwell B70 Item Type Machine Screws Product Code 5150-20305 SKU 4065653