Spiral Flute Tap: 1/2-13 UNC, 3 Flutes, Bottoming, 3B Class of Fit, High Speed Steel, Black Oxide Coated MPN:6140586

Spiral flute taps are used for cutting internal threads on a wide variety of materials such as metal, plastic, and wood. In machining applications, they are useful in situations where precision and finish are critical. They can produce uniform threads with minimal chatter or vibrations due to the geometry of their spiral flutes, which provide better chip evacuation than straight flute taps. UNC is a common thread standard for metric equipment; however, this tap is designed to create threads according to the American National Standard for Taps and Dies (ANSI/ASME B89.18M-1996) in inches. Additionally, this tap's bottoming chamfer provides better support at the entrance of the hole by reducing stress concentrations and ensures easier entry when starting threads. Manufactured from high-speed steel material for durability and resistance to heat, this tap can withstand tough machining applications. Finally, its black oxide coating offers increased wear resistance, corrosion protection, and longer service life in harsh environments or during repetitive usage. In conclusion, spiral flute taps such as these are versatile tools used extensively across industries like automotive, aerospace, medical devices, plumbing, construction, to create precise threads on various materials using machine tools such as lathes, drills or milling machines for precision machining.