UNC thread · Small diameter UNC thread
The TC615 series comprises professional-grade, slim-shank thread mills engineered for the precision machining of ANSI B1.1-74 standard 60° UN miniature threads. Featuring an ultra-fine grain carbide substrate, these tools enable efficient and precise machining of 60° Unified threads (UN series), making them an ideal choice for mold making, aerospace, automotive, and general machining applications. A range of high-performance coatings is available, ensuring 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 miniature threads into steel components for aerospace sensors and navigation equipment, meeting stringent high-reliability requirements.
| Product Series | TC615 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.
Strictly adheres to the ANSI B1.1-74 standard to meet precision threading requirements; thread formation is achieved in a single pass, boosting machining efficiency by 45% compared to traditional taps.
Shank diameters as small as 0.3 mm and cutting diameters ranging from #0 to 1/4" enable small-bore threading for precision parts, overcoming the inability of traditional tools to access narrow cavities.
Features HRC68-grade ultrafine-grained carbide with 60% higher resistance to edge chipping, enabling stable machining of materials such as steel, aluminum alloys, and titanium alloys.
Thread pitch accuracy is controlled within ±0.005 mm, and surface finish reaches Ra ≤ 0.2 μm, meeting the stringent tolerance requirements for precision components.
Utilizing a vacuum ion plating process, coating adhesion is increased by 40%, preventing coating detachment that could compromise machining accuracy.
The direct action of the cutting fluid reduces friction between the cutting edge and the workpiece, improves the quality of the machined surface, and reduces tap wear.
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.