Carmex Spiral Mill Threading Insert in Whitworth form (H19-11WMT7) is a flexible, high-performance threading tool designed for a wide range of milling applications. Whether you’re working on compact precision components in small machining centers or tackling demanding production on high-power mills, this spiral threading insert delivers reliable, repeatable Whitworth threads with a clean finish.

• High-efficiency spiral design: enables smooth cutting at higher feed rates, reducing cycle time and improving productivity while maintaining thread accuracy.
• Flexible, indexable insert system: spiral toolholders hold 1 to 9 inserts in a compact cutting diameter with a unique clamping method for optimal indexability and consistent results.
• MT7 sub-micron TiN-coated inserts: general-purpose grade (ISO K10–K20) that delivers wear resistance and versatility across a wide range of materials, extending tool life and reducing downtime.

Together, these features translate into faster material removal, lower vibration and chatter, and a reliable path to high-quality Whitworth threads. The combination of spiral geometry, adaptable insert capacity, and durable MT7 coatings supports smoother workflows, simpler setup, and dependable results across both small-scale tasks and heavy-duty production.