Description
- Chrome Alloy UNC Hand Tap Set.
- Used as thread chasers to clean an existing thread.
- They can also be used to create a new female thread in non-ferrous metals and plastics.
- Chrome alloy taps are not suitable for creating precision, safety or critical threads.
- Unified National Coarse thread form was introduced in 1948 as an attempt to standardise thread forms in the USA, Canada and the UK.
- The thread profile of UNC is the same as for metric threads and is described in the JIS B0206 standard.
- The thread is described by its major diameter and the number of threads per inch of length (TPI).
- This thread series is commonly used in the mass production of bolts, screws and nuts.
- It is used for threading into lower tensile strength materials (bronze, brass, aluminium and plastics) to obtain the best resistance to stripping of the internal thread.
- It is also used on quick assembly or disassembly or if corrosion or slight damage is possible.
- Bottoming Taps have a lead of two threads and are used to ensure minimum thread run-out when tapping to the bottom of a blind hole.
- Taper Taps have a lead of eight threads and are used as a starting tap in difficult or high precision holes.
- Intermediate Taps have a lead of four threads and are used in most general purpose applications to cut a thread true to a pre-drilled pilot hole.
- Bottoming Taps are typically preceded by the use of a Taper or Intermediate Tap.
Options
- 4232-3/8TS
- 4232-5/16TS
Options
- 4232-3/8TS
- 4232-5/16TS
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