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The 1-inch 12 UNF hand tap has a nominal diameter of 1 inch and a thread pitch of 12 threads per inch TPI, designed according to the Unified National Fine standard. The thread angle is 60 degrees, which enhances mechanical strength and joint quality. The tool is made from high-speed steel HSS with a hardness of 60 to 65 HRC, providing high resistance to wear and heat. The overall length typically ranges from 90 to 110 millimeters, and the square shank allows quick and secure installation in a tap wrench. Precise chip removal flutes ensure uniform cutting and reduce the force required during threading.
This hand tap is suitable for creating precise internal threads in metals ranging from soft to hard. The recommended pilot drill size for this tap is approximately 22.1 millimeters to achieve optimal thread engagement. The suggested manual operating speed ranges from 8 to 12 revolutions per minute to prevent overheating and tool damage. This tap is widely used in aerospace, automotive, and machining industries, delivering very high-quality threads.
WEBSITE: HAND TAPS 1-12 UNF Iran
