Item Specifications UPC 842176184067 Package Quantity 5 Size 5/16"-18 x 3-1/4" Head Style Socket Cap Head Diameter 15/32" Head Height 0.3125" Drive Style Allen Hex Key Drive Size 1/4" Inch / Metric Inch Thread Size 5/16"-18 Thread Dia. 0.3125" Thread Class Class 3A Coarse / Fine Coarse Threads Per Inch (TPI) 18 Thread Coverage Partial Thread Length 3-1/4" Material Stainless Steel 316 Finish Plain Tensile Strength 70,000 PSI Core Hardness Rockwell B70 Item Type Socket Screws Product Code 5150-27410 SKU 3TSCS95C304