What type of tap can be used for internal threading when the work permits?

A taper tap is designed specifically for the initial stages of forming internal threads. It features a gradual taper that allows it to enter the hole more smoothly than other types of taps, making it ideal for situations where the hole may not have precise dimensions or where conditions allow for easier threading. This gradual taper facilitates entry and helps guide the tap into the material, reducing the risk of cross-threading and ensuring proper alignment during the threading process.

When allowed by the work material and conditions, the effectiveness of a taper tap allows for more straightforward threading in various scenarios, particularly in deeper holes where access may be limited. The other types of taps, while useful for different applications, do not share this same level of adaptability or ease of use in all threading situations.