Kennametal 1288868 Indexable Threading Toolholder

Product Description

The KENNAMETAL 1288868 is a right-hand indexable threading toolholder designed for grooving and threading operations on CNC lathes and turning centers. Built from steel, the holder accepts CDG-style inserts secured by a screw-clamping method and features a 0.25-inch square shank for rigid setup in standard tool blocks. The insert inscribed circle measures 0.156 inches, and the back-of-bar to cutting edge distance is 0.312 inches. This is a multi-use toolholder suitable for both grooving and threading applications, making it a practical addition to a machinist or toolroom technician's turning setup.

This toolholder fits production turning and manual lathe environments where threading and grooving tasks are performed on the same holder setup. The A04 toolholder style and A04FCSER12 designation help technicians cross-reference to compatible insert grades and geometries. The 0.25-inch square shank suits small-bore and compact turning applications. With an overall length of 3 inches and a center-to-cutting-edge dimension of 0.175 inches, it is sized for precision work where tool interference clearance is a factor. Installation is performed by machining professionals and toolroom technicians in job shop and production environments.

Key Features

• Right-hand cut orientation for standard OD threading and grooving passes
• Screw-clamp insert holding method for secure, repeatable indexing
• CDG insert compatibility for threading and grooving insert grades
• Steel construction for rigidity and durability under interrupted cuts
• Multi-use design supports both grooving and threading in a single holder
• No coolant-through requirement, simplifying setup on standard turning machines

Compatibility

Designed for use with CDG-style indexable inserts. Toolholder style is A04, with style designation A04FCSER12. Verify insert inscribed circle and style code when selecting replacement or compatible inserts.

Installation Notes

This toolholder is installed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before mounting or changing the toolholder or insert. Ensure the shank seating surface and tool block bore are clean and free of chips before clamping. Follow the machine tool manufacturer torque guidelines for the tool block clamping screws and verify tool centerline height before resuming cuts.