British Standard Coarse Thread
The TM539 series comprises professional-grade thread milling cutters engineered for the precision machining of 55° British Standard Whitworth (BSW) coarse threads. Featuring an ultra-fine grain carbide substrate, these cutters deliver efficient and precise machining of 55° Imperial threads (BS series), making them an ideal choice for mold making, aerospace, automotive, and general machining applications. Available with a range of high-performance coatings, the series ensures exceptional machining efficiency, superior surface finish, and consistent, long tool life across various materials with hardness levels up to 58 HRC. They are particularly well-suited for machining precision threads into steel components for aerospace sensors and navigation equipment, where high reliability is paramount.
| Product Series | TM539 Series |
|---|---|
| Tool base material | Ultrafine-grained tungsten carbide |
| Product Name | Coated thread milling cutter |
| OEM / ODM | Made to your samples or drawings |
| Specifications and Model | 5/8"-11 BSW |
| Lead time | In stock / 2 weeks |
| Origin | Shenzhen, China |
Design details engineered for accuracy, tool life and process stability.
Strictly adheres to the DIN 259 standard to meet the general coarse-thread connection requirements of imperial industrial equipment; achieves thread formation in a single pass, boosting machining efficiency by 40% compared to traditional taps.
Utilizes HRC65-grade ultra-fine grain carbide with 50% higher chip resistance, ensuring stable machining of common materials such as steel, aluminum alloys, and stainless steel.
Thread pitch accuracy is controlled within ±0.008mm, and surface finish reaches Ra ≤ 0.3μm, meeting tolerance requirements for imperial industrial parts.
The cutting edge radius is precisely controlled at 0.005mm, balancing sharpness with wear resistance to minimize edge chipping and extend tool life.
Uses a vacuum ion plating process to increase coating adhesion by 40%, preventing coating delamination that could compromise machining precision.
Direct application of cutting fluid reduces friction between the cutting edge and the workpiece, improving machined surface quality and reducing tap wear.
The cutting edge radius is precisely controlled at 0.003mm, balancing sharpness with wear resistance to minimize edge chipping and ensure machining consistency.
Features an eccentric cutting design that eliminates the need for pre-drilled center holes, allowing for direct threading of blind holes; this reduces process steps and increases efficiency.
Send the thread standard, size and tolerance class. We supply standard taps and thread mills, plus special threads made to your samples or drawings.