Something must have changed recently: I have purchased 30 sets of bolts for 25G
from Hill Radio within the last year or so and all worked well. The bolts I
just checked are a mixture of JH and JDF markings.
One question I have not seen here: have you put a torque wrench on the bolt/nut
combination to determine what the tightening torque actually is? Did Rohn give
you any clue as to what the proper torque should be?
Ken K6MR
On 1/27/2016 Wednesday 6:15 AM, StellarCAT wrote:
> I bought the bolts from Hill Radio ... they’ve been working with Rohn... Rohn
> says they’ve not changed the design of the bolts in “some time” and indeed it
> is because of the need to “meet standards”. THEY say they probably will
> remove the galvanizing!! So they’re aware apparently of the fact that their
> design will reduce the life of the bolt itself! On the first ‘set’ (leg set)
> I opened, and by the way these appear to be Chinese made as they have a “JDF”
> marking on the top which a Google search says is a Chinese metal fastener
> maker, (they are marked as Grade 5 also), I could not turn the nut past the
> point when the dimples met the thread of the bolt.
>
> Thanks for all the comments... I’ll figure something out.
>
> Gary
>
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