1/2" · British Standard Whitworth (BSW)
For 1/2" · British Standard Whitworth (BSW), thread or drill designation is 1/2"; record type is tap_drill; tap drill or decimal size is 10.50mm; thread series is British Standard Whitworth (BSW), recorded from its source on 2026-08-28; source re-checked 2026-09-15.
- Thread or drill designation
- 1/2" our reading
- Record type
- tap_drill our reading
- Tap drill or decimal size
- 10.50mm verified
- Thread series
- British Standard Whitworth (BSW) our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
1/2" | 12 | 10.50mm
— newmantools.com, retrieved 2026-08-28
Source
- newmantools.comhttps://www.newmantools.com/tapdrill.htm