From the Amphenol drawings it is 1/2" x 28.

Dan K.

On Tuesday, November 19, 2024 at 11:22:57 AM EST, Roy J. Tellason, Sr. via groups.io <roy@...> wrote:

On Tuesday 19 November 2024 09:10:30 am David Slipper via groups.io wrote:
> I picked up a LARGE handful of 50ohm BNC bulkhead connectors but some of
> them lack nuts and washers :-(
>
> What size are they ??
>
> The thread is not M10 so I assume its "imperial".

Probably.

> M10 crinkle washers are too big.

Perhaps you'll find something useful in one of the references on this page:




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