Item Specifications UPC 842176172118 Package Quantity 50 Size 1/4"-20 x 1-1/2" 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 1-1/2" Thread Length Dec. 0.75" Material Steel Material Type Hot Dip Galvanized Steel Grade Grade 307A Finish Hot Dip Galvanized Specification 1 ASME : B18.2.1 Specification 2 ASTM : A307 Tensile Strength 60,000 PSI Core Hardness Rockwell B69 Item Type Bolts Product Code 5150-12195 SKU 3GBM904C0108