H&R Mfg HR-112-2.5-OP Serrated Steel Lathe Chuck Jaw PK2

This is a new set of 2 H&R Manufacturing HR-112-2.5-OP serrated steel lathe chuck jaws, confirmed by the stamped marking '112 2.5 O' visible on the body of one jaw in the photos. These are standard top jaws featuring a serrated (knurled-tooth) gripping face on both the top and front clamping surfaces, providing positive workpiece engagement under high clamping force. Each jaw body incorporates a T-slot or step-slot mounting groove on the top face for attachment to the master jaw base, with two through-bolt mounting holes per jaw visible in all photos. The pointed/beveled nose profile on the lower gripping end is characteristic of outside-diameter (OD) clamping geometry, consistent with the 'OP' (outside position/OD clamping) designation in the part number. These jaws are machined from steel and are intended for use on lathes with compatible master jaw chucks where the 112 series jaw geometry applies.

Product Specifications