Kennametal 1097278 Threading Toolholder Left Hand 0.5 in

Product Description

The KENNAMETAL 1097278 is a left-hand indexable threading toolholder from the Top Notch series, designed for both internal and external threading and grooving operations. It accepts an N.2L insert held in place by a clamp-style holding method. The shank measures 0.5 x 0.5 inches with an overall length of 3.5 inches and a head length of 0.75 inches. Maximum depth of cut is 0.138 inches. This toolholder is intended for use on CNC lathes and manual turning centers where precision thread-form cutting is required. Machinists and toolroom professionals working in production or job-shop environments are the primary installers.

The 1097278 is suited for threading and grooving applications on both internal bores and external diameters. Its compact 0.5-inch square shank fits standard small-to-mid-range lathe tool posts and turrets. The multi-use design allows a single holder to cover both thread forms and grooving profiles when paired with the appropriate Top Notch N.2L insert. This makes it a practical choice for shops that need to reduce tooling inventory while maintaining flexibility across a range of part geometries.

Key Features

• Handles both internal and external threading and grooving in one holder
• Left-hand orientation for dedicated left-hand turning setups
• Clamp-style insert retention provides rigid, repeatable insert seating
• Top Notch series compatibility with N.2L inserts
• 0.5 x 0.5 inch square shank fits standard small lathe tool posts
• No coolant-through design keeps setup simple for standard applications

Compatibility

Designed for use with KENNAMETAL Top Notch series N.2L indexable inserts. Fits standard 0.5-inch square shank tool blocks and turret pockets on small-to-mid-range CNC and manual lathes.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the turret or tool post is locked out before mounting or changing the toolholder. Secure the shank fully within the tool block to the manufacturer-recommended engagement depth before tightening. Verify insert seating and clamp engagement before initiating any cutting operation.