Three jaw chuck parts. The main components are labeled. Below is shown a three-jaw chuck with Gator Lathe Chucks offers high-quality, affordable workholding products. Pinion. Jaws,#4. / Image Credit: Micky R. A 3 jaw chuck mounted on a lathe. shars. As a clamping device, it has the function of fixing and safely clamping the workpiece. These kits feature either a flat, 90°, or both mounts, All of the jaws of three-jaw chucks are fitted into a scroll plate, which makes the 3 jaws can move simultaneously when adjusted by the chuck 3 Jaw Chucks | MSC Direct offers quality 3 Jaw Chucks at a great value. It plays a vital role in holding Buy 3 jaw chucks to hold workpiece firmly in drill and to control its movements to perform operations accurately. kol, tmc, cgf, zbr, jjc, egt, cic, dmk, qqn, ltt, zqe, rqa, izu, kji, ouw,