Well, Roy, here is cut and paste from Ian's post:

"All the contact pressure in a BNC derives from the rubber washer inside
the bayonet ring. A good BNC should need quite a hard twist to make the
bayonet click into place... and in old surplus plugs, this springiness
does wear out."

"....rubber washer inside the bayonet ring." sure doesn't sound like cable
retention to me. Sorry for the confusion, I guess.

On the other hand, when the rubber washer deteriorates, the connectors mate
much more easily once, as the female contact is destroyed in the process.

Ian, I suspect that is your failure mode, as I have chopped up some very old
connectors, and the spring washers still seem to retain their shape, while
the rubber is rotten. On the other hand, I have seen some cheapies which
are soft from the manufacturer. I send those back.
--
Crazy George
Remove NO and SPAM from return address
"Roy Lewallen" wrote in message
...
Ah. We're talking about two different things. I thought that the subject
had come up about securing the braid within the connector. Ian's initial
response was along the line of what I've observed. And that's what I was
talking about. But you're talking (I think) about what secures the male
connector to the female, another issue altogether.

Yes, I've never broken the latching collar off a BNC, so I've never seen
the associated components. I fully believe you that there's a wavy
washer to apply the pressure.

Roy Lewallen, W7EL