Pneumatics Frequently Asked Questions
Question
What is the difference between NPT, BPT, and BSPT threads?
Answer
THREAD STANDARDS- NPT stands for National Pipe Thread and is a US standard for threads. This is a tapered thread with a 60 degree threadform. The taper is 3/4" per foot.
- BPT stands for British Pipe Threads and is a standard in many countries of the United Kingdom. This is a 55 degree untapered threadform.
- BPST stands British Standard Pipe Taper and is the same threadform as BPT, but includes a taper. BP thread connections usually use a male tapered side and then a tapered or untapered female side.
Obviously NPT and BP threads are not compatible.
FAQ Subcategory: None
This item was last updated on 2021-02-09
Document ID: 1414
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