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The KENNAMETAL 1097587 is an external, right-hand indexable threading toolholder from the Top Notch series, designed for precision threading and grooving operations on CNC lathes and turning centers. Built with a 1 x 1 inch square shank and an overall length of 5 inches, this toolholder accepts N.3R inserts secured by a clamp-style holding method. It is a multi-use tool rated for both grooving and threading applications, making it a practical single-holder solution for shops running high-mix turning work. Licensed machinists and CNC operators in production and job-shop environments are the primary users of this toolholder.
This toolholder is suited for external threading operations on workpieces mounted in a lathe chuck or collet. The Top Notch series platform is commonly deployed in production turning environments where repeatable insert indexing and rigid clamping are required. The head length measures 1.25 inches, the maximum depth of cut is 0.21 inches, the center-to-cutting-edge distance is 0.5 inches, and the back-of-bar-to-cutting-edge dimension is 1.25 inches. No coolant-through capability is present on this toolholder, so external coolant delivery should be used when required by the application.
Designed to accept N.3R series inserts using the Top Notch (NS) toolholder style platform. Also referenced under MSC and manufacturer number NSR/L163C.
Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine before mounting or removing the toolholder from the turret. Secure the shank firmly in the tool block to the machine manufacturer's specified clamping torque. Verify tool offset entry after any insert change or toolholder swap before resuming cutting operations.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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