Kennametal 1281813 Threading Toolholder External Left Hand

Product Description

The KENNAMETAL 1281813 is an external, left-hand indexable threading toolholder designed for precision thread-cutting operations on CNC lathes and manual turning centers. Part of the KENNAMETAL LT Threading series, it accepts LT 16EL inserts held in place by a clamp-style insert holding method. The shank measures 1 x 1 inches in cross-section with an overall length of 6 inches, providing a rigid platform for consistent thread geometry. The toolholder weighs 1.72 pounds and is suited for machinists and tool-and-die professionals requiring reliable, repeatable external threading performance.

This toolholder is configured for external threading applications where a left-hand cutting orientation is required. The LSS toolholder style and 3/8-inch insert inscribed circle make it compatible with standard LT 16EL threading inserts. Typical use cases include production threading on OD surfaces in general machining shops, aerospace component manufacturing, and heavy-duty fabrication environments. The 1 x 1 inch shank fits standard tool post and turret positions commonly found in medium-sized lathes.

Key Features

• External, left-hand threading orientation for OD thread-cutting applications
• LSS toolholder style with clamp-style insert retention for secure, repeatable insert positioning
• Accepts LT 16EL indexable threading inserts with a 3/8-inch inscribed circle
• 1 x 1 inch square shank with 6-inch overall length for rigid tool setup
• No coolant-through design; single-use tool configuration
• Part of the KENNAMETAL LT Threading series for standardized insert management

Compatibility

Designed for use with LT 16EL indexable threading inserts. Fits standard tool posts and turret stations accepting a 1 x 1 inch square shank. Verify turret and tooling block clearances 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. Ensure the shank seating surfaces and turret bore are clean and free of chips before tightening. Follow the machine tool manufacturer's recommended clamping torque procedures for square-shank toolholders; do not exceed the tool post or turret manufacturer's specified holding capacity.