Item Specifications UPC 842176163390 Package Quantity 10 Size 1/4"-20 x 3-1/2" Head Style Hex Head Height 11/64" Drive Style External Hex Drive Size 7/16" Inch / Metric Inch Thread Size 1/4"-20 Thread Dia. 0.250" Thread Class Class 2A Coarse / Fine Coarse Threads Per Inch (TPI) 20 Thread Coverage Partial Thread Length 3-1/2" Thread Length Dec. 0.8" 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 5150-12885 SKU 3SSC904C0308