Skipping tooth design
The TC680 series comprises professional-grade, slim-shank thread mills specifically designed for machining 60° metric/MJ aerospace precision threads in accordance with the DIN ISO 5855-1 standard. Manufactured from ultra-fine-grain carbide, these tools enable efficient and precise machining of 60° metric threads (MJ series), making them an ideal choice for mold making, aerospace, automotive, and general machining applications. Available with a variety of high-performance coatings, the series ensures exceptional machining efficiency, superior surface finish, and consistent, long tool life across various materials with hardness levels below 28 HRC. They are capable of machining No. 1-72 micro-threads into steel substrates for aerospace sensors and navigation equipment, meeting stringent high-reliability requirements.
| Product Series | TC680 Series |
|---|---|
| Tool Substrate | Ultrafine-grained tungsten carbide |
| Product Name | Micro thread milling cutter |
| OEM / ODM | Made to your samples or drawings |
| Specification Model | N0.1-72UNF × D4.0 × 50L |
| Lead time | In stock / 2 weeks |
| Origin | Shenzhen, China |
Design details engineered for accuracy, tool life and process stability.
Complies with DIN ISO 5855-1, ideal for aerospace high-precision, high-fatigue threaded joints. Threads form in one pass, lifting machining efficiency by 45% vs conventional taps.
Large flutes and interrupted cutting design separate chips, letting coolant fully reach cutting zones. It greatly lowers heat and built-up edge risks, ideal for sticky materials like stainless steel and titanium alloys.
Utilizes HRC68-grade ultra-fine grain carbide with 60% improved resistance to edge chipping, enabling stable machining of difficult-to-machine aerospace materials such as titanium alloys, superalloys, and stainless steel.
The skip-tooth, variable-pitch design reduces the number of cutting teeth in contact at any one time, lowering cutting resistance by 40%–50% and significantly mitigating deformation in thin-walled parts and chatter during deep-hole machining.
Thread pitch accuracy is maintained within ±0.003 mm, and surface finish reaches Ra ≤ 0.15 μm, meeting the stringent tolerance requirements for aerospace components.
Utilizing a vacuum ion plating process, coating adhesion is increased by 40%, preventing coating detachment that could compromise machining accuracy.
The cutting edge radius is precisely controlled at 0.003 mm, balancing sharpness and wear resistance, reducing edge chipping, and ensuring machining consistency.
Featuring an eccentric cutting design, it eliminates the need for pre-drilling a center hole and allows for the direct machining of blind-hole threads, thereby reducing process steps and increasing 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.