It is unlikely that Fastenal or any hardware supplier will have 5/16-18
u-bolts for larger than 3" diameter. To some degree you can reshape u-bolts
to custom diameters using a vice, I have done this many times however in
this case it would still be hard to find one long enough. I am not too
familiar with Hy-gain rotators, I quit using them decades ago, but perhaps a
larger diameter u-bolt can be made to work. The easiest solution is to buy
from a company fabricating u-bolts for Hy-gain rotators like DX Engineerring
.
John KK9A
Steven Lamendola ke4thx wrote:
Have you tried Fastenal? I got all the SS u bolts and other fasteners for
my Mosley PRO-67B from them.
73
Steve LaMendola KE4THX
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 27 Nov 2025 13:51:48 +0000
> From: john simmons <jasimmons at pinewooddata.com<mailto:
> jasimmons at pinewooddata.com>>
>
>
> I'm searching for these and not finding any at the usual sources-
> McMaster, MSCDirect, etc. The specs are: 5/16"-18 x 3-1/4" x 4"
> stainless. Any suggestions???
>
>
> -de John NI0K
>
>
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