The Carmex Carbide Threading Insert in Whitworth (40-11W) is a versatile, TiAlN-coated carbide insert designed for precision threading across a wide range of profiles. Built for professional machinists and job shops, it delivers reliable performance in both internal and external applications with minimal tool changes.

• Coating & material: TiAlN-coated carbide for enhanced wear resistance and high-temperature stability during demanding threading operations.
• Profile coverage: A versatile set that supports all common thread profiles, with a focus on Whitworth threads for consistent results.
• Length options: Five available lengths (from 12 mm to 40 mm) to accommodate different tool setups and pitches.
• Pitch range: Suitable for pitches from 0.5 mm (32 TPI) up to 6.0 mm (4 TPI), offering broad threading capability in a single insert family.
• Double-sided edges: Inserts are designed with two cutting edges to maximize usable life, except for BSPT/NPT/NPTF/American Buttress/API RD configurations.
• Internal & external capability: For many thread profiles, the same insert can machine both internal and external threads, reducing the need to carry multiple inserts (note: some profiles like ISO/UN/NPSM/UNJ/Acme have specific limitations).
• Model: 40-11W, a compact code that fits into standard threading insert catalogs for easy selection and replacement.

This threading insert is tailor-made for shops that demand efficiency and consistency. Its TiAlN coating helps extend tool life on tough materials, while the broad pitch and profile support minimize downtime caused by switching inserts. Whether you’re finishing Whitworth fittings, adjusting internal threads in housings, or preparing external threads on shafts, this insert delivers dependable performance with fewer tool changes and stable, repeatable results across a range of jobs.