Kennametal 1097590 Threading Toolholder External Right Hand

Product Description

The KENNAMETAL 1097590 is an external, right-hand indexable threading toolholder from the Top Notch series. It accepts N.3R inserts secured by a clamp-style holding method, providing consistent insert positioning during threading and grooving operations. The shank measures 0.75 x 0.75 inches (19.05 x 19.05 mm) with an overall length of 4.0 inches (101.60 mm). A head length of 1.25 inches (31.75 mm) and a maximum depth of cut of 0.21 inches (5.33 mm) define the reach envelope. This toolholder is intended for use by machinists and CNC toolroom technicians on lathes and turning centers performing external threading and grooving work.

The 1097590 is suited for external threading and grooving applications on CNC lathes and manual turning equipment. Its Top Notch series designation groups it with a standardized insert platform that covers a broad range of thread forms and groove profiles. The NS toolholder style and clamp retention make it a practical choice for production environments where insert changes need to be fast and repeatable. It is also marked as a multi-use tool, supporting both threading and grooving in a single holder body.

Key Features

• External, right-hand cutting orientation for standard lathe threading operations
• Clamp-style insert retention for secure, repeatable N.3R insert seating
• 0.75 x 0.75 inch (19.05 x 19.05 mm) square shank fits common lathe toolpost and turret pockets
• Maximum depth of cut of 0.21 inches (5.33 mm) supports shallow grooving and threading passes
• Multi-use design handles both threading and grooving applications
• Top Notch series platform for broad insert availability across thread forms and profiles

Compatibility

Designed for use with N.3R series Top Notch indexable inserts. Compatible insert style is designated NS; verify insert geometry and thread form against the specific thread standard being cut before use.

Installation Notes

Installation is performed by a machinist or CNC toolroom technician. Power down and lock out the machine spindle before mounting or removing the toolholder from the turret or toolpost. Ensure the shank pocket is clean and free of chips before seating the holder, and torque the clamping screws to the machine manufacturer's specification. When indexing inserts, use the appropriate Torx or hex key and follow the insert supplier's clamping torque guidance printed on the insert packaging.