Item Specifications UPC 842176117645 Package Quantity 25 Size 1/4"-20 x 1-5/8" Head Style Flat Counter Sink Angle 82 Degree Head Diameter 0.492" Head Height 0.168" 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 1-5/8" Thread Length Dec. 1.464" 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 5150-8555 SKU ssfscs1420158-25