Socket is a hollow pipe into which a structure like a hand tool can be fit and is used to extend the reach and flexibility of a hand tool. A Socket has a cup shaped fitting with a recess that grips the head of the bolt. The Socket snaps onto a male fitting on the handle. The handle Suppliers the mechanical advantage to provide the torque to turn the Socket.
Eastman provides sockets of smooth surface by successional punching one side from open end to SQ, therefore forms the concentricity in centre of socket which further reduces vibrating while sockets in use. A proper bolt clearance is given to fit the nut cap perfectly, thus interior depth of socket becomes shorter, but the torque of the socket is increased. A proper heat treatment is given resulting in a better equalized grain enabling sockets to apply maximum torque and therefore improves life of the socket.