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The best domestic aluminum tap!
Research and development in accordance with Japan aluminum special tap angle! The handle is made in Japan
M3 a small amount of black coating does not affect the use!
Must see: please contact me before filming, to confirm if there is no inventory! Avoid unnecessary trouble!
Our store can open invoice value added tax invoice according to customer's requirement!
Effective length of shank square blade
M3 4 3.2 6 50 18.67
M4 5 4 8 56 22.30
M5 5.5 4.5 10 65 26.72
M6 6 4.5 12 68 32.89
M8 6.2 5 13 70 27.82
M10 7 5.5 15 75 34.46
Thread processing common problems Tap break: 1, the bottom diameter is too small, causing blockage of cutting chip is not good;
2, tapping speed is too high, too fast;
3, with the tap tapping with the threaded hole diameter of the shaft;
4, the selection of the grinding parameters of taps is improper, and the hardness of the machined parts is unstable;
5, tap use time is too long, excessive wear. Tapping tooth: 1, the front angle of the tap is too large;
2, tap each tooth cutting thickness is too big;
3, tap quenching hardness is too high;
4, tap use time is too long, wear serious. The tap diameter is too large: The selection of the middle diameter accuracy of taps is improper; the choice of cutting is not reasonable; the tapping speed of wire tapping is too high; the taps and workpieces are too high
With the threaded holeThe parameter selection of tap grinding is not suitable; the length of tap cutting cone is too short. The tap diameter is too small: Improper selection of the middle diameter accuracy of tap, unreasonable selection of tap edge parameters, tap wear, and unsuitable choice of cutting fluid.