Designed for precision external thread turning, the Carmex Screw Clamp Thread Turning External Holder (Left Hand, 100 mm OAL) delivers reliable rigidity and straightforward setup for shop-floor threading tasks. It’s built for machinists who demand consistent, repeatable thread forms and dependable performance in demanding environments.

• Left-hand orientation: Specifically configured for left-handed external threading operations to match your machining sequence.
• 100 mm OAL: Generous reach that maintains stability while accessing external threads on longer workpieces.
• 16x16 shank: Standard, compact shank size that fits common tool posts and turrets for versatile mounting.
• Insert compatibility: Supports ER and EL inserts for a wide range of thread pitches and materials, with U-Type inserts accommodated by the corresponding holder design.
• Screw clamp mechanism: Secure engagement and quick setup that minimizes tool runout and speeds changeovers between operations.
• 1.5° helix angle: Typical helix angle optimized for efficient chip evacuation and improved cutting performance during external threading.
• Robust construction: Built for rigidity and long tool life, delivering stable performance through repeated threading passes.

In practice, this holder helps you produce accurate external threads with cleaner finishes and fewer rework cycles. The left-hand geometry simplifies certain threading sequences, reducing setup time in production runs. Its compatibility with ER/EL inserts and U-Type options provides flexibility across multiple thread standards and workpiece materials, so you can adapt quickly without switching tools. The screw clamp design ensures repeatable clamping force and minimal runout, contributing to consistent part tolerances and better surface finishes on shafts, studs, and fittings—making it a dependable choice for everyday threading tasks in machine shops and production environments.