Item Specifications UPC 842176179001 Package Quantity 25 Size 1/4"-20 x 9/16" Head Style Flat Counter Sink Angle 82 Degree Head Diameter 0.531" Head Height 0.161" Drive Style Allen Hex Key Drive Size 5/32" Inch / Metric Inch Thread Size 1/4"-20 Thread Dia. 0.250" Thread Class Class 3A Coarse / Fine Coarse Threads Per Inch (TPI) 20 Thread Coverage Full Thread Length 9/16" Thread Length Dec. 0.5625" Material Stainless Steel 316 Finish Plain Specification 1 ASME : B18.3 Tensile Strength 70,000 PSI Core Hardness Rockwell B70 Item Type Socket Screws Product Code 5150-9130 SKU 3TSSF94C009