Hertel H08716102 Indexable Threading Toolholder Internal

Product Description

The HERTEL H08716102 is an internal indexable threading toolholder designed for use on CNC lathes and manual turning centers where precise internal thread forms are required. Built to the SIR0265K08 toolholder style, it accepts indexable threading inserts with a 3/16 inch inscribed circle, allowing repeatable thread cutting without the need to regrind cutting edges. The 5/8 inch shank diameter suits a wide range of standard boring bar holders and quick-change toolpost setups. This toolholder ships with 10 inserts included, making it ready for immediate use in production or job-shop threading operations. Machinists and toolroom technicians working in ferrous and non-ferrous materials will find this a direct fit for internal threading passes.

This toolholder is suited for internal threading applications on turning equipment where a 5/8 inch shank is compatible with the machine tool setup. Typical use cases include threading bores on workholding components, hydraulic fittings, and precision mechanical assemblies. The SIR0265K08 style designates the insert pocket geometry and approach angle, which dictates the thread profile and cutting direction. This toolholder is a single-use-direction tool and is not configured as a multi-use reversible holder.

Key Features

• SIR0265K08 toolholder style for internal threading operations
• 5/8 inch shank diameter fits standard boring bar and quick-change holders
• Accepts indexable threading inserts with 3/16 inch inscribed circle
• Includes 10 indexable inserts per order
• Dedicated internal thread cutting geometry — not configured as a multi-use tool

Compatibility

Designed as an OEM-style indexable threading toolholder for use on CNC and manual lathes with a 5/8 inch shank tool holding system compatible with the SIR0265K08 style.

Installation Notes

Installation should be performed by a qualified machinist familiar with turning center tooling setup. Before mounting or changing inserts, ensure the machine spindle is fully stopped, all motion is arrested, and the machine is placed in an appropriate lockout state per shop safety procedures. Secure the shank firmly in the toolholder or turret position to the tool clamping specification of the machine tool manufacturer. Follow the insert manufacturer indexing instructions and inspect the insert pocket and clamping screw for wear before seating a fresh insert.