Kennametal 1097253 Threading Toolholder 1x1 in Left Hand

Product Description

The KENNAMETAL 1097253 is a left-hand indexable threading toolholder from the Top Notch series, designed for both internal and external threading operations on CNC lathes and turning centers. Built with a 1 x 1 inch square shank and a 6 inch overall length, it uses a clamp-style insert holding method and is compatible with NU 3125R inserts. The toolholder is intended for machinists and tool-room professionals who require precise thread-form geometry on a variety of workpiece materials. Its square shank profile and robust clamping mechanism provide the rigidity needed for consistent threading passes.

This toolholder suits production turning applications in job shops and manufacturing facilities where repeatable threading performance is required. The left-hand orientation is selected when spindle direction or workpiece setup demands reversed cutting engagement. It is appropriate for use on manual and CNC lathes handling standard and specialty thread forms. The Top Notch series is a well-established platform for indexable threading, making the 1097253 a direct-fit choice when rebuilding or expanding a threading toolholder inventory.

Key Features

• Handles both internal and external threading with a single toolholder style
• Left-hand cutting orientation for reverse-spindle or specific workholding setups
• 1 x 1 inch square shank for positive, rigid machine interface
• Clamp-style insert retention accepts NU 3125R inserts
• 6 inch overall length with a 1.25 inch head length for reach and clearance
• Part of the Top Notch series for broad insert and accessory ecosystem compatibility

Compatibility

Designed for use with NU 3125R indexable threading inserts within the KENNAMETAL Top Notch toolholder platform. Verify machine tool interface and turret pocket dimensions against the 1 x 1 inch shank profile before installation.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine before mounting or removing the toolholder from the turret or tool post. Ensure the shank seating surfaces are clean and free of chips before tightening. Follow machine tool manufacturer torque and clamping guidelines for the specific turret or block style in use.