Taps - Second - NPT

Taps are tools used by engineers for creating a female thread inside a hole. The tap is inserted into a special wrench and turned whilst cutting oil is used to lubricate the tap.

When forming a brand new thread in a blind hole, it is usually a three-stage process.

Using taps

  • Firstly a taper tap is used. This tap has a pronounced taper to the cutting edges, ensuring that the first cut is less aggressive.
  • After the taper tap comes a second tap. This also has a tapered edge, but not as pronounced as the taper tap. This slight taper helps align the tap when it is first introduced to the hole.
  • The third and final stage is carried out with a bottoming tap, often referred to as plug tap. Bottoming taps have hardly any taper and a continuous cutting edge.

When cutting shallow female threads, it may be possible to skip the third stage and just use the taper or second taps.

If tapping into a soft material it is possible to cut the thread with only a second tap.

Read more details

View as Grid List

1 Item

Code Product Name Info Pack Size Price Qty
1/2 T2NP050 1/2" NPT - Second Tap Presto 60750
1
£40.50 £48.60
1/2 T2NP050
1/2" NPT - Second Tap Presto 60750
1
£40.50 £48.60
View as Grid List

1 Item