Spiral fluted taps are used to tap holes with slots.
Spiral fluted taps are used to tap holes with slots.
The shape of the thread in the NOT GO end of a thread snap gauge is truncated, which means length of NOT GO end is shorter than GO end.
The handle of thread plug gauge is made from ebonite material for Reducing the weight
Square, Modified square, Acme and Buttress thread groups are only for transmitting motion