A tool for machining internal threads with grooves along the axis. Also called a tap. Tap according to its shape is divided into straight tap, spiral tap and spiral tip tap (tip tap). The straight groove tap is easy to process, the precision is slightly lower, and the output is larger. Generally used for thread processing of ordinary lathes, drilling machines and tapping machines, the cutting speed is slow. The spiral groove tap is mainly used for drilling blind holes in CNC machining centers, with fast processing speed, high precision, good chip removal and good neutrality. The front part of the screw tip tap has a chip slot for the processing of the through hole. Most of the taps provided by the tool factory are coated taps, which have a great improvement in service life and cutting performance compared with uncoated taps. Unequal diameter design tap cutting load distribution is reasonable, high processing quality, but the manufacturing cost is also high. Trapezoidal thread taps are often designed with unequal diameters.
https://thread-insert.en.made-in-china.com/product-list-1.html
Thread specification |
Bit diameter (mm) |
Thread specification |
Bit diameter (mm) |
M2*0.4 |
2.1 |
M8*1 |
8.3 |
M2.5*0.45 |
2.6 |
M10*1 |
10.3 |
M3*0.5 |
3.1 |
M10*1.25 |
10.3 |
M4*0.7 |
4.2 |
M12*1.25 |
12.3 |
M5*0.8 |
5.2 |
M12*1.5 |
12.4 |
M6*1 |
6.3 |
M12*1 |
12.3 |
M7*1 |
7.3 |
M13*1.25 |
13.3 |
M8*1.25 |
8.3 |
M14*1.5 |
14.4 |
M10*1.5 |
10.4 |
M14*1.25 |
14.3 |