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Special aluminum spiral groove wire tapping aluminum alloy M3M4M5M6M8M10M12 machine tap

discount 70% in 2018-09-25 to 2018-09-27
price: USD$ 19.43
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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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!

Tel: 18013808989

Reference size

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 hole
The 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.