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4ba one-size-smaller half nuts

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simon Hewitt 126/03/2019 09:50:07
42 forum posts
6 photos

Does anyone know where I can get 4BA half-nuts, one size smaller?

I can get one-size-smaller, and I can get half nuts, but not both at once.


Simon H.

David George 126/03/2019 10:02:45
943 forum posts
310 photos

Hi Simon

How about machining them to correct thickness on a lathe etc. Hold them on a screw locked to other nuts and just face to length.


Michael Gilligan26/03/2019 10:04:57
14124 forum posts
614 photos

I think you may be asking the impossible impractical, Simon

Have you compared the thickness of a half 5BA nut with the pitch of 4BA ?



P.S. Skimming down some full nuts to a realistic height might be the best option.

Edit: David beat me to that ^^^

Edited By Michael Gilligan on 26/03/2019 10:05:57

JasonB26/03/2019 10:16:32
16427 forum posts
1739 photos
1 articles

I never buy locknuts. just reduce the height of standard ones.

John Baguley26/03/2019 11:19:31
428 forum posts
46 photos

Alternatively, buy 5BA and retap them 4BA.


FMES26/03/2019 11:27:29
602 forum posts
2 photos

Simon, I think you need these, **LINK** and then plane them down to the required thickness as David suggests


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