Kennametal 1712616 Threading Insert 14 Tpi Whitworth Carbide

Product Description

The KENNAMETAL 1712616 is a solid carbide laydown threading insert designed for external right-hand Whitworth thread cutting at 14 threads per inch (TPI). Manufactured to the LT16ER14WCB geometry in KENNAMETAL grade KC5025, this insert features a PVD-applied TiAlN coating that supports wear resistance at elevated cutting temperatures. With an inscribed circle of 3/8 inch (9.53 mm) and a thickness of 0.1430 inch (3.44 mm), the 1712616 is suited for precision threading operations on CNC lathes and turning centers. Machinists and toolroom technicians working in job shops, production environments, and maintenance machining rely on this insert for consistent thread form accuracy.

This insert is intended for external Whitworth thread profiling on turning equipment. The Whitworth thread standard is common in legacy industrial machinery, hydraulic fittings, and British-standard fastener applications. The 16ER-style seat geometry fits compatible toolholders designed for laydown threading inserts of this form factor. The CB chipbreaker designation provides controlled chip formation during threading passes, supporting process reliability in interrupted or continuous cuts.

Key Features

• Solid carbide substrate with PVD TiAlN coating for elevated wear and heat resistance
• 14 TPI Whitworth external thread profile, right-hand cutting direction
• KC5025 grade — optimized for threading in a range of workpiece materials
• CB chipbreaker geometry for controlled chip evacuation during threading
• Inscribed circle: 3/8 inch (9.53 mm); thickness: 0.1430 inch (3.44 mm)
• Hole diameter of 0.1551 inch (3.94 mm) for secure clamping in compatible toolholders

Compatibility

Designed as an OEM-style replacement threading insert for 16ER-style laydown threading toolholders accepting a 3/8-inch inscribed circle insert with a CB chipbreaker seat.

Installation Notes

Threading insert replacement is performed by qualified machinists on CNC or manual lathes with the machine powered down and all axes at rest before accessing the toolholder. Use a torque wrench per the toolholder manufacturer's clamping specification when securing the insert screw — do not overtighten. Inspect the toolholder seat for chips or debris before seating the new insert. Verify thread form with a thread gauge or optical comparator before returning the part to production.