UCS-11(c) and (d)
UCS-11(c) and (d)
(OP)
I asked this question in the ASME forum, but didn't receive a response.
Is it permissible to use regular hex nuts (in lieu of heavy hex nuts) with UG-44 flanges in accordance with UCS-11(d)?
Thanks in advance!
Is it permissible to use regular hex nuts (in lieu of heavy hex nuts) with UG-44 flanges in accordance with UCS-11(d)?
Thanks in advance!





RE: UCS-11(c) and (d)
Yes, provided you meet (d) above.
RE: UCS-11(c) and (d)
My concern was that the phase in (c):
"For use with flanges conforming to the standards listed in UG-44, nuts shall conform at least to the dimensions given in ASME B18.2.2 for Heavy Series nuts."
prohibited using (d) to justify smaller regular hex nuts. And then there is Table 1C of ASME B16.5.
But I agree that UCS-11(d) allows use of regular hex nuts provided a calculation shows that they are acceptable. Just wanted to make sure I wasn't the only one in the world that saw it that way.