Item Specifications UPC 842176169118 Package Quantity 25 Size 1/4"-20 x 1-1/2" Head Style Oval Counter Sink Angle 82 Degree Head Diameter 0.477" Head Height 0.312" Drive Style Slotted Inch / Metric Inch Thread Size 1/4"-20 Thread Dia. 0.250" Thread Class Class 2A Coarse / Fine Coarse Threads Per Inch (TPI) 20 Thread Coverage Full Thread Length 1-1/2" Thread Length Dec. 1.188" Material Brass Finish Plain Specification 1 ASME : B18.6.3 Tensile Strength 50,000 PSI Core Hardness Rockwell B50 Item Type Machine Screws Product Code 5150-30165 SKU 3RSMSO94C108