Item Specifications UPC 842176116020 Package Quantity 25 Size 1/4"-28 x 5/16" Head Style Button Head Diameter 0.437" Head Height 0.132" Drive Style Allen Hex Key Drive Size 5/32" Inch / Metric Inch Thread Size 1/4"-28 Thread Dia. 0.250" Thread Class Class 3A Coarse / Fine Fine Threads Per Inch (TPI) 28 Thread Coverage Full Thread Length 5/16" Thread Length Dec. 0.3125" Material Stainless Steel 18-8 Finish Plain Specification 1 ASME : B18.3 Tensile Strength 70,000 PSI Core Hardness Rockwell B70 Item Type Socket Screws Product Code 5150-2585 SKU ssbscs1428516-25