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Whitworth/ UNC Screws
#6
(31-07-2018, 10:16 PM)bob46320 Wrote: 7/32 is 5.556 mm  0BA is 6mm  and as the Austin wasn't metric I would hazard a guess that you should look for 0BA
 This site shows 3/16 BSF    http://www.stainlessautomotivefastenings...ts_id=8824

Also 0BA raised countersunk
https://www.stainlessautomotivefastening...rtbd37r4j6

You can identify a 12-24 screw by measuring the diameter with a ruler at slightly less than 7/32″ (slightly larger than 3/16″ or 0.210″).

Hi Bob,0BA is close to 1/4” and too big, 3/16 is too small, 1/32” undersize.
Thanks for suggestions.

(01-08-2018, 12:23 AM)Phil Kingdom Wrote: You could always re-thread a M6 to 7/32 Whit, I just tried it on a mild steel bolt as a test and the thread came out OK.

Thanks Phil, sounds like a plan,will try that
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Messages In This Thread
Whitworth/ UNC Screws - by Zetomagneto - 31-07-2018, 08:07 PM
RE: Whitworth/ UNC Screws - by stuartu - 31-07-2018, 08:52 PM
RE: Whitworth/ UNC Screws - by Zetomagneto - 31-07-2018, 09:55 PM
RE: Whitworth/ UNC Screws - by bob46320 - 31-07-2018, 10:16 PM
RE: Whitworth/ UNC Screws - by Zetomagneto - 01-08-2018, 08:58 AM
RE: Whitworth/ UNC Screws - by Phil Kingdom - 01-08-2018, 12:23 AM

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