Weihe high-speed steel unequal diameter forming machine tap 2 pieces per set M1.2M1.4M2.5M3M4M5M6M8

　　Product Parameters

Unequal diameter tapping machine (set of two)

The unequal diameter tap is divided into two sets, namely the head cone and the second cone. The diameter of the head cone is slightly smaller, and the second cone is the bottom cone. Due to the fact that the cutting of tapping is completed in two stages, the machined tooth profile has higher accuracy and better tooth surface gloss, making it suitable for thread machining with high requirements for threads.

Material and hardness of tap

Tolerance of tap

Machine tap threads are divided into H1, H2, and H3 according to GB968-83; According to GB968-67, it is divided into levels 1, 2, 2a, 3, and 3a. The first three tolerance zones are equivalent to the differential bands for tap threads of levels 1, 2, and 3 in the international standard ISO2857-1973. The relationship between the pitch diameter tolerance zones of tap threads manufactured according to GB3464-83 and GB966-67, as well as the internal thread tolerances that can be machined by various tolerance zone taps, are shown in the table

External structural dimensions

　　Product Packaging