5/16" · British Standard Whitworth (BSW)
For 5/16" · British Standard Whitworth (BSW), thread or drill designation is 5/16"; record type is tap_drill; tap drill or decimal size is 6.50mm; 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
- 5/16" our reading
- Record type
- tap_drill our reading
- Tap drill or decimal size
- 6.50mm 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
5/16" | 18 | 6.50mm
— newmantools.com, retrieved 2026-08-28
Source
- newmantools.comhttps://www.newmantools.com/tapdrill.htm