

Electrical connector threads
The TM811 series is a professional-grade thread end mill specifically designed for precision machining of DIN 40430 standard 80° Pg threads. Utilizing an ultra-fine grain carbide substrate, it efficiently and accurately machines 80° Pg threads, making it ideal for mold making, aerospace, automotive, and general machining applications. This series offers a variety of high-performance coatings, ensuring superior machining efficiency, excellent surface finish, and long-lasting tool life in a wide range of materials below 58 HRC. It is also suitable for machining Pg7 left-hand threads on steel substrates in aerospace sensors and navigation equipment, meeting high reliability requirements.
| Product Series | TM811 Series |
|---|---|
| Tool Base Material | Ultrafine tungsten carbide |
| Product Name | Thread milling cutter |
| OEM / ODM | Made to your samples or drawings |
| Specifications/Model | Pg7 |
| Lead time | Spot / 2 weeks |
| Origin | Shenzhen, China |
Design details engineered for accuracy, tool life and process stability.
Strictly adheres to DIN 40430 standards, meeting the sealing thread connection requirements of German standard electrical connectors. Thread formation is completed in a single pass, increasing machining efficiency by 40% compared to traditional taps.
Utilizes HRC68 grade ultra-fine grain carbide, improving chipping resistance by 60% and enabling stable machining of electrical materials such as steel, aluminum alloys, and brass.
Thread pitch accuracy is controlled within ±0.005mm, and surface finish reaches Ra≤0.2μm, meeting the stringent tolerances and sealing requirements of electrical equipment.
Utilizing vacuum ion plating, coating adhesion is improved by 40%, preventing coating peeling and ensuring machining accuracy.
Using a thickened, equal-diameter shank body, rigidity is increased by 25%, eliminating runout during high-speed machining and ensuring consistent thread depth and accuracy.
The direct action of cutting fluid reduces friction between the cutting edge and the workpiece, improving surface finish and reducing tap wear.
The cutting edge radius is precisely controlled at 0.003mm, balancing sharpness and wear resistance, reducing edge chipping, and guaranteeing consistent machining.
An eccentric cutting design eliminates the need for pre-drilling a center hole, allowing direct machining of blind holes and threads, reducing 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.