Sockets aid in the installation of retention knobs and pull studs. By using a socket and a torque wrench, the ideal tightness is achieved without rounding off the corners of the retention knob. Sockets are designed to work when flats are up to .020 under wrench max size.
Our sockets are made with AISI 4140 steel made in the USA and machined in the United States at our plant in Mantua, Ohio. Our retention knob sockets are hardened to 54-56 RC and have a black oxide finish. We have four sizes available that fit our full line of retention knobs and pull studs.