Since it's a photographic item I suspect that the 3/8 in thread would be
3/8-16. It's not at all clear to me what your bracket looks like or
whether it has a male of female thread. I'm guessing a female thread
such that it could be attached to a tripod with 3/8-16 male thread or
(perhaps more likely) to a light stand with 3/8-16 male stud attached.
Search B&H and others for "light stand adapter" and sort by price low to
high looking for under $20 items. Other search terms to use besides
"adapter" are "stud", "tip", or "spigot".
Chuck Norcutt
On 10/26/2010 6:12 PM, usher99@xxxxxxx wrote:
> Speaking of threads, the FB bracket seems to have a 3/8 inch thread and
> only 2 turns of that--no clue as to the TPI.
> I don't see many adapters to make this 1/4 that has a flange for
> stability.
> I don't want the OM-2 falling anywhere. I would be heartbroken.
> I could use the opposite of this:
>
> http://tinyurl.com/28ao9c4
>
> Any ideas?
>
> Then I have to figure out how to get a A-S plate on the bracket.
>
> No Loose Screws Allowed, Mike
>
>
> The historic standard threading for the bolt that attaches the camera
> to
> the tripod is 1/4"-20tpi (threads per inch) British Standard Whitworth
> (Whitworth or BSW) for smaller cameras or 3/8"-16tpi BSW for larger
> cameras and pan/tilt heads. Bolts using 1/4"-20 UNC and 3/8"-16 UNC
> screw threads are generally close enough to work when BSW bolts are
> unavailable. Note: A BSW bolt in a UNC nut has play, but a UNC bolt in
> a
> BSW nut will jam.
> ---------------------------------------------------------------
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