Sealed pipe joint threads
The TM556 series comprises professional-grade thread milling cutters specifically engineered for the precision machining of 55° British Standard Taper Pipe Threads (BSPT) in accordance with B.S.21:1985. Manufactured from ultra-fine grain carbide, these cutters deliver efficient and precise machining of 55° British threads (G-series), making them an ideal choice for mold making, aerospace, automotive, and general mechanical engineering 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 | TM556 Series |
|---|---|
| Tool Base Material | Ultrafine-grained tungsten carbide |
| Product Name | Coated thread milling cutter |
| OEM / ODM | Made to your samples or drawings |
| Specifications/Model | 1"-11 BSPT |
| Lead time | In stock / 2 weeks |
| Origin | Shenzhen, China |
Design details engineered for accuracy, tool life and process stability.
Strictly follows the B.S.21:1985 standard and adapts to the thread connection requirements of British taper sealed pipe joints. The taper thread forming can be completed in one pass, and the processing efficiency is 40% higher than that of traditional taps.
Thread pitch accuracy is controlled within ±0.005mm, taper tolerance ≤0.01mm, surface finish can reach Ra≤0.2μm, meeting the strict tolerance and sealing requirements of taper sealed pipe joints
HRC68 grade ultra-fine grained carbide is used, which has a 60% improvement in chipping resistance and can stably process pipe joint materials such as steel, brass, and stainless steel.
The edge radius is precisely controlled at 0.003mm, balancing sharpness and wear resistance, reducing edge breakage and ensuring processing consistency
Using the vacuum ion plating process, the coating adhesion is increased by 40% to prevent the coating from falling off and affecting the processing accuracy.
The direct action of cutting fluid reduces the friction between the cutting edge and the workpiece, improves the quality of the machined surface and reduces tap wear.
The edge radius is precisely controlled at 0.003mm, balancing sharpness and wear resistance, reducing edge breakage and ensuring processing consistency.
Adopting an eccentric cutting design, there is no need to pre-drill a center hole, and blind hole threads can be processed directly, reducing the number of processes and improving 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.