Tap Widespread use of threaded connections in the industry, in particular a bolt-nut, as well as countless anchorages on the basis of the thread, led to a variety of proposals for the use of cutting tool. This article focuses exclusively about the tap. We will help avoid confusion in a number of proposals of suppliers and will address structural features of this type of instrument. The tap is threading tool used for threading into the holes. The tap has a rod-like shape. Consists of, the cutting part with cut grooves or napaynymi combs, and the shank is clamped in a ratchet or machine-gun.
The tap is welded or solid (mostly in large diameters in order to save material). Taps are made of tool steel (9HS), high speed steel (R6M5, R18, R9) or less of the hard alloy. Classification tap. Taps are divided into two groups by the nature of this machine tap, or it is also called machine-hand and hand tap. Machine and hand taps are used in manufacturing the machines machines, usually made of high speed steel with a substantial content of tungsten in steel R6M5 mainly or R9M3. Hand taps do not need special hard and made of solid steel at least. Shank hand tap lengthened for better placement in the manual vorotke. Hand taps are used for tapping into larger non-replaceable parts or to work in tight spaces. Hand taps in the main available kits. Includes roughing, intermediate and finishing taps, indicated they 1, 2, 3.