Hertel H08703399 Laydown Threading Insert 22IRN60 HG330TR

Product Description

The HERTEL H08703399 is a solid carbide laydown threading insert designed for internal partial-profile 60-degree thread cutting on CNC lathes and manual threading operations. Manufactured to the 22IR insert style, this insert carries the HG330TR grade designation and features a dual-layer TiC/TiN coating for improved wear resistance and tool life during threading passes. It is sized with a 0.5000-inch inscribed circle, measures 0.187 inches thick, and covers a thread range of 7 to 5 TPI, corresponding to a pitch range of 3.50 to 5.00 millimeters. Machinists and CNC operators working with ferrous and non-ferrous materials in production threading applications are the primary users of this insert.

This insert is suited for right-hand internal threading operations in production and job-shop environments. Typical applications include threading bores in hydraulic fittings, pipe components, fastener bodies, and general machined parts requiring 60-degree thread forms within the 7 to 5 TPI range. The 22IR insert style seats in compatible laydown threading toolholders, making it a common choice on multi-axis CNC lathes and turret-style turning centers. The partial-profile geometry allows the insert to cut thread form without requiring an exact pitch match to the holder, offering some versatility across pitches within its rated range.

Key Features

• Solid carbide substrate with TiC/TiN dual-layer coating for extended wear resistance
• 22IR insert style in laydown orientation for secure seating in compatible toolholders
• Right-hand internal partial-profile 60-degree thread form
• Covers 7 to 5 TPI (3.50 to 5.00 mm pitch) in a single insert
• 0.5000-inch inscribed circle with 0.187-inch thickness and 1-degree relief angle
• HG330TR manufacturer grade designation for consistent repeat performance

Compatibility

Designed for use in 22IR-style laydown threading toolholders that accept a 0.5000-inch inscribed circle insert. Verify toolholder seating geometry and insert pocket dimensions before installation to confirm fit.

Installation Notes

Threading inserts of this type are installed and changed by qualified machinists or CNC operators following standard turning-center lockout and toolchange procedures. Ensure the machine spindle is fully stopped and the turret is indexed to a safe position before handling inserts. Use the correct torque driver or hex key specified by the toolholder manufacturer when securing the clamping screw — do not overtighten, as this can fracture the carbide substrate. Inspect the insert pocket and seating surface for chips or debris before seating the new insert.