Item Specifications UPC 842176163710 Package Quantity 5 Size 5/16"-18 x 4-1/4" Head Style Hex Head Height 7/32" Drive Style External Hex Drive Size 1/2" 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 Partial Thread Length 4-1/4" Thread Length Dec. 0.9" Material Stainless Steel 18-8 Finish Plain Specification 1 ASME : B18.2.1 Tensile Strength 70,000 PSI Core Hardness Rockwell B70 Item Type Bolts Product Code 5150-13035 SKU 3SSC905C0404