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British Pipe Threads

Reference data and engineering information about british pipe threads for material properties applications.

britishpipethreads

Overview

British Standard Pipe threads per BS 21 / ISO 7 / ISO 228. BSPT (tapered) seals on threads, BSPP (parallel) seals with O-ring.

Data Table

14 rows
British Standard Pipe thread dimensions (BS 21 / ISO 7)
designation
1/16
1/8
1/4
3/8
1/2
3/4
1
1-1/4
1-1/2
2
2-1/2
3
4
5

Source: engineeringtoolbox.com

Notes

  • Values are at standard conditions unless otherwise noted
  • Always verify values for critical applications

References