I finally got the damaged collet key removed from my B'port C head spindle
> but found it's threaded 1/4 x 32. Anyone know of a source for a setscrew at
> least 3/8"long in that thread or a bolt or threaded rod from which I can
> make a replacement.
>
> I can always turn one on the lathe but I'd like a good fit and that will be
> difficult without good thread measuring tools. I'd also rather not rethread
> the hole, either.
> Thanks,
> Jim S.
here ya go
Wow, I don't think that is right. !/4" standard threads are 20 and 28.
I'm thinking this may be a 6 mm x 0.8 metric screw.
Jon
I just bought one from Bridgeport and it is indeed 1/4-32
Wow, I don't think that is right. !/4" standard threads are 20 and 28.
I'm thinking this may be a 6 mm x 0.8 metric screw.
Jon =============================
1/4-32 UNEF is found on Alco miniature toggle switches and model engine glow plugs.
I just checked. 1/4-32 is a standard for UNEF.
UNF is indeed 28 and UNC is 20 though.
I often forget to check for UNEF threads until confronted by one.
Yes, I've seen it on miniature switches, but never in a bolt or setscrew before. Learn something new every day!
Jon
I just checked. 1/4-32 is a standard for UNEF.
UNF is indeed 28 and UNC is 20 though.
I often forget to check for UNEF threads until confronted by one. =============================================
Here are some other odd threads you may encounter:
Have something to add? Share your thoughts — no account required.
Ask the community — no account required