Item Specifications UPC 842176136967 Package Quantity 100 Size 1/4"-20 x 1" 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 1" Thread Length Dec. 0.839" Material Alloy Steel Grade Grade 8 Finish Black Oxide Specification 1 ASME : B18.3 Tensile Strength 120,000 PSI Core Hardness Rockwell C32 Item Type Socket Screws Product Code 5150-10265 SKU 211111