Carpin Manufacturing Inc

Metal Threaded Inserts

Metal threaded inserts from Carpin serve two purposes: enclosing the end of a round or square tube; and providing a female receptacle that accepts the threaded stem of glides and casters.

The primary function of a metal threaded insert is to cap off the end of a vertical leg of a table, desk, shelving, or POS display, and to allow an adjustable glide and/or caster with threaded stem to be screwed in. In this configuration, the threaded insert adds strength and functionality to the tubular leg.

All Carpin metal threaded inserts are made of the highest quality steel components. The portion that holds the metal threaded insert securely in the tube is the clip or star washer. Made of high carbon steel that is heat treated for added strength and rigidity, the star washer/clip features a unique shape and geometry that allows for easy insertion and optimum retention. As the threaded insert gets inserted into the tube, the star washer/clip flexes normally to bend in the direction of entry. The edges of the clip then bite into the ID of the tubing, offering rigid support that preventing the clip from being removed.

 The end portion of the metal threaded insert is zinc plated steel and hardened for added strength. The two components of the threaded metal insert are fastened together with a steel nut that is wider in diameter than the components, creating an exceptionally strong connection. severals types of metal threaded insert are available, including versions with steel spacers and multiple star washers for added stability and holding power.