Item Specifications UPC 842176124193 Package Quantity 100 Size #1-72 x 5/16" Head Style Button Head Diameter 0.129" Head Height 0.033" Drive Style Allen Hex Key Drive Size 0.05" Inch / Metric Inch Thread Size #1-72 Thread Dia. 0.073" Thread Class Class 3A Coarse / Fine Fine Threads Per Inch (TPI) 72 Thread Coverage Full Thread Length 5/16" Thread Length Dec. 0.3125" Material Alloy Steel Grade Grade 8 Finish Black Oxide Specification 1 ASME : B18.3 Specification 2 ASTM : F835 Tensile Strength 120,000 PSI Core Hardness Rockwell C37 Item Type Socket Screws Product Code 5150-3580 SKU 701300