Hertel H08707192 Threading Insert 12 Tpi 3/8 in Ic Un

Product Description

The HERTEL H08707192 is a laydown threading insert designed for external UN thread cutting at 12 threads per inch. Built from solid carbide with a TiC/TiN multilayer coating, this insert delivers consistent thread form and extended tool life in production and job-shop turning operations. The 16ER insert style seats securely in compatible laydown-style toolholders, and the right-hand orientation makes it suited to standard external threading passes on a CNC or manual lathe. Machinists and toolroom operators use this insert when accuracy and repeatability across UN-standard thread profiles are required.

This insert is intended for external threading operations conforming to the UN thread standard at 12 TPI. The 3/8-inch inscribed circle and 0.146-inch thickness fit the 16ER insert pocket geometry. Typical applications include threading steel and alloy workpieces in manufacturing, maintenance, and repair environments where a right-hand external UN thread form must be held to standard tolerances. The solid carbide substrate handles interrupted cuts and harder workpiece materials better than high-speed steel alternatives.

Key Features

• Solid carbide substrate with TiC/TiN coating for wear resistance and extended edge life
• 16ER insert style for laydown-style external threading toolholders
• Right-hand cut for standard external UN thread profiles
• 12 TPI thread pitch for common UN fastener and fitting threads
• 3/8-inch inscribed circle with a 0.146-inch thickness
• Zero-degree relief angle for laydown seating geometry

Compatibility

Designed for use in 16ER-style laydown threading toolholders configured for external right-hand UN thread cutting at 12 TPI.

Installation Notes

Insert installation should be performed by a qualified machinist with the lathe or turning center powered down and the spindle locked. Use the correct torque wrench and insert screw specified by the toolholder manufacturer - do not overtighten, as carbide inserts can crack under excessive clamping force. Confirm insert seating and pocket cleanliness before engaging the workpiece. Follow the toolholder manufacturer guidelines for insert indexing and replacement intervals.