Abbott Workholding KTT6A1SQ Soft Lathe Chuck Jaw Serrated

Product Description

The ABBOTT WORKHOLDING PRODUCTS KTT6A1SQ is a soft lathe chuck jaw set with a serrated, square jaw interface machined from 6061-T6 aluminum. Sold as a 3-jaw set, these jaws are designed to be bored in-place on the lathe to achieve near-zero runout for precise, repeatable workholding. The serrated interface locks each jaw securely to the chuck body, resisting shifting under cutting loads. Overall jaw dimensions are 1.25 inches wide, 2 inches tall, and 3 inches long, making this set suited for chucks up to 6 inches in diameter. Machinists and tool room operators install these jaws when gripping finished surfaces, soft materials, or irregularly shaped workpieces that standard hard jaws would damage.

This jaw set is intended for use on manual and CNC lathes equipped with compatible 3-jaw scroll chucks up to 6 inches in diameter. The serrated interface is a widely adopted standard, making these jaws a practical replacement or spare set for production turning, repair shops, and tool rooms. They are particularly well suited for second-operation work where part finish and dimensional accuracy are critical. Mount hole center spacing of 0.7874 inches and a fastener size of 0.3937 inches align with common chuck mounting configurations in this size class.

Key Features

• Serrated square jaw interface for secure, positive engagement with compatible chuck bodies
• 6061-T6 aluminum construction allows easy in-place boring to exact workpiece geometry
• Compatible with 3-jaw chucks up to 6 inches in diameter
• Mount hole center distance of 0.7874 inches with 0.3937-inch fastener size
• Slot width of 0.472 inches and groove width of 0.4724 inches for consistent fit
• Sold as a complete 3-jaw set, ready to bore and install

Compatibility

Designed as an OEM-style replacement soft jaw set for 3-jaw lathe chucks with a maximum compatible chuck diameter of 6 inches and a serrated jaw interface with 0.7874-inch mount hole center spacing.

Installation Notes

Soft jaw installation and boring should be performed by a qualified machinist familiar with lathe workholding procedures. Before removing existing jaws or mounting new ones, power down the lathe and follow lockout-tagout procedures per facility safety standards. Torque fasteners to the chuck manufacturer's specification using the correct hex key or T-handle wrench. Bore jaws in the clamped position under light pre-load to ensure concentricity before taking the final bore pass.