Stainless Steel Socket Cap Screws - Metric Sizes
A2 Stainless Steel Socket Cap Screws
A socket cap screw head driven with a socket Allen wrench, metric socket cap screws A2 stainless steel fasteners are knurled and non knurled. A socket cap screw, also known as a socket head cap screw, socket screw or Allen socket bolt, is a type of cap screw with a cylindrical head and hexagonal (Allen) drive hole. The term socket head cap screw typically refers to a type of threaded fastener whose head diameter is nominally 1.5 times or more that of the screw shank diameter.