Item Specifications UPC 842176174433 Package Quantity 10 Size 1/4"-20 x 3-1/2" Head Style Flat Counter Sink Angle 82 Degree Head Diameter 0.477" Head Height 0.153" 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 3-1/2" Thread Length Dec. 3.347" 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 5150-27935 SKU 3RSMSF94C308