Home / Screws, Nuts & Washers / Socket Screws / Socket Cap Head Screws / UNF Socket Cap Screws - ANSI B18.3 / UNF Socket Cap Head Screws - High Tensile Steel UNF Socket Cap Head Screws - High Tensile Steel 6-40 UNF Socket Cap Head Screws 8-36 UNF Socket Cap Head Screws 10-32 UNF Socket Cap Head Screws 1/4" UNF Socket Cap Head Screws 5/16" UNF Socket Cap Head Screws 3/8" UNF Socket Cap Head Screws 7/16" UNF Socket Cap Head Screws 1/2" UNF Socket Cap Head Screws 5/8" UNF Socket Cap Head Screws