The Carmex Thread Turning Holder Top Clamp External (Left-Hand, 125 mm OAL) is a precision tool built for reliable external threading on lathes. Designed for machinists who value secure clamping and consistent thread profiles, it accommodates Carmex 16EL inserts for accurate, repeatable cuts.

• Left-Hand External Thread Turning Holder: specifically configured for left-handed threading operations to ensure correct cutting direction and chip flow.
• 125 mm Overall Length (OAL): compact yet rigid design that minimizes deflection during external thread cuts.
• 20 x 20 mm Shank: standard square shank provides secure seating in tool holders and turrets.
• 1.5° Helix Angle: optimized to improve chip evacuation and deliver smooth, stable cutting performance.
• Top Clamp or Screw Clamp: flexible clamping options to fit your setup, with the top clamp offering secure retention for precise threading.
• ER/EL Insert Compatibility: designed to work with Carmex ER and EL inserts, including the 16EL insert, for a wide range of thread profiles.

Benefits: This holder translates its solid construction and thoughtful geometry into dependable, repeatable external threading outcomes. The 1.5° helix aids chip evacuation, reducing built-up heat and chatter, while the top clamp design delivers secure, repeatable clamping that minimizes runout between passes. With left-hand orientation and a robust 125 mm OAL, it’s well-suited for production tasks and repair work that demand consistent thread forms. The 20x20 shank ensures a stable interface with standard tool holders, and compatibility with ER/EL inserts—including the 16EL type—gives you flexibility to match thread pitch and depth to your exact specifications.