- Thread Size: 1/4-18, 3/8-18
- Thread Type: NPT
- Cutter Diameter Inch: 0.363in
- Number of Flutes: 4
- Shank Diameter: 3/8in
- Shank Type: Cylindrical
- Length of Cut: 0.68in
- Overall Length: 3-1/2in
- Type: Helical Flute Heavy Duty
The AccuThread 856 is AMEC's premium threadmilling product range, manufactured from micro grain carbide and coated in AMEC's AM210® premium coating. This product is designed for the demanding environment of high production threadmilling, providing extraordinary tool life and exceptionally high quality thread forms. The AccuThread range is available in a wide selection of thread standards and forms part of our specials program, allowing you to tailor design threadmills to your specific requirements.
- Item Features
- AccuThread 856® standard cutting lengths allow for multiple applications without the need for special threadmills
- Helical flute which offers increased strength and rigidity when forces are applied
- Allied's proprietary AM210® coating provides a 25 to 50% increase in tool life over the competition
- Internal/external thread
- Thicker core for increased strength
- Sub-micrograin size carbide substrate for strength and toughness
- Heavy duty geometry for tough materials (40+ rc steels, aerospace alloys, etc)
- Solid carbide materia