Socket head bolts are incorporated with deep socket, generally hexagonal. An allen key is used to tighten or loosen these bolts. Socket head cap screws are used for applications with limited space. They have cylindrical head and internal wrenching features that allow them to be used in locations where externally wrenched fasteners aren’t desirable. They are used for critical vehicle applications, machine tools, tools and dies, earth moving and mining machinery, and a wide range of engineering applications. We are one of the talked about suppliers of socket head fasteners in India.