Bison 7-883-312 Hard Top Jaws 4.331" OAL 2.165" OAH Set of 3 Lathe Chuck Jaws

This is a new (other condition) complete 3-piece matched set of Bison part number 7-883-312 hard steel top jaws, individually numbered 1, 2, and 3 as visible on the jaw faces, and carrying the secondary code 398532860200 stamped on each jaw. Each jaw measures 1.457 in. overall width (OAW), 2.165 in. overall height (OAH), and 4.331 in. overall length (OAL), and is manufactured from hardened steel for use in high-precision, high-force lathe chuck clamping applications. The two-piece (top + master jaw) serrated construction is clearly visible in the photos, with the standard serrated master jaw interface (fine-pitch horizontal serrations on the mating face) and a countersunk bolt hole for positive jaw-bolt attachment. Bison is a Polish precision workholding manufacturer operating under the ISO 9001 quality system; these jaws are designed to retrofit onto compatible Bison 3-jaw scroll chucks accepting the matching jaw-slot pitch and T-nut/bolt pattern — buyers should verify chuck body size and jaw bolt pattern compatibility before ordering.

Product Specifications