Pipe joint threads
The TM551 series consists of professional-grade thread milling cutters precision-engineered for 55° British Standard Pipe Parallel (BSPP) threads (compliant with B.S.2779:1956). Manufactured from ultra-fine grain carbide, these cutters enable efficient and precise machining of 55° British threads (G-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 delivers 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 on steel components for aerospace sensors and navigation equipment, where high reliability is essential.
| Product Series | TM551 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 | 3/8"-19 BSPP |
| Lead time | In stock / 2 weeks |
| Origin | Shenzhen, China |
Design details engineered for accuracy, tool life and process stability.
Strictly adheres to the B.S.2779:1956 standard to meet the threading requirements of imperial sealing pipe fittings; thread formation is achieved in a single pass, boosting machining efficiency by 40% compared to traditional taps.
Utilizes HRC65-grade ultrafine-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 maintained within ±0.005mm, and surface finish reaches Ra ≤ 0.2μm, meeting the stringent tolerance and sealing requirements for pipe fittings.
The cutting edge radius is precisely controlled at 0.005mm, balancing sharpness with wear resistance to minimize edge chipping and extend tool life.
Employs a vacuum ion plating process that increases coating adhesion by 40%, preventing coating delamination from compromising machining accuracy.
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-drilling center holes, allowing for direct threading of blind holes; this reduces process steps and enhances 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.