On Wed, 24 Aug 2005 12:32:30 -0400, Jeff Wisnia
wrote:


I do hope you get lucky and you find you can expose enough of the
threaded portion. Judging from the 4-40 setscrew in your photo, I'd
guess that the thread on the broken part (If it's US made) is likely to
be 6-32,


A banana jack from my goodie box measures as follows:

Stud: 3.82 mm (.151") over threads, 0.8mm pitch. Could be a
Chinese 8-32; an 8-32 nut fits but it's a bit sloppy. Std 8-32 is
..157 min OD. M4 x 0.8 isn't a standard metric thread, but who
knows?

Barrel: 5.70 mm (.224") over threads, 0.75mm pitch. M6 x .75 is a
standard metric fine thread.

Don Foreman wrote:
On Wed, 24 Aug 2005 12:32:30 -0400, Jeff Wisnia
wrote:


I do hope you get lucky and you find you can expose enough of the
threaded portion. Judging from the 4-40 setscrew in your photo, I'd
guess that the thread on the broken part (If it's US made) is likely to
be 6-32,



A banana jack from my goodie box measures as follows:

Stud: 3.82 mm (.151") over threads, 0.8mm pitch. Could be a
Chinese 8-32; an 8-32 nut fits but it's a bit sloppy. Std 8-32 is
.157 min OD. M4 x 0.8 isn't a standard metric thread, but who
knows?

Barrel: 5.70 mm (.224") over threads, 0.75mm pitch. M6 x .75 is a
standard metric fine thread.

Different strokes for different folks, Don. Every one of the standard
sized banana jacks in my Hell Box has a 6-32 mounting stud, measuring
..136" over the threads. And, the bodies are aluminum, with steel 6-32
nuts on them.

They look just like the ones on some of my old Heathkit test equipment.
which probably hasn't been turned on in 40 years, but I just can't bring
myself to part with them. Probably my survivors will stick it all in the
box with me when they send me off to that great model shop in the sky. G

I'm praying this thread will eventually reach a happy ending with the OP
posting a photo for us to see showing the binding post area of his
speaker restored to pristine condition.

Jeff

--
Jeffry Wisnia

(W1BSV + Brass Rat '57 EE)

"Truth exists; only falsehood has to be invented."

In article ,
says...


As they say down Maine, "Pretty is as pretty does."

The Downeast equivalent of "Form follows function." But we
also say, "Close enough for a fishboat," "Good enough for
who it's for," "Slick as snot on a brass doorknob," and a
few more I can't repeat in polite company.

Ned Simmons

Ned Simmons wrote:

"Slick as snot on a brass doorknob,"

Wher I grew up, central PA, it was a "glass" doorknob.
:-)
...lew...

Well, I finally got a good solder joint and the post appears to be
solidly connected. I can now move the speaker or insert the bananna
plug without breaking the solder joint. It was matter of making sure
that both ends were well tinned and holding the iron on the post for
long enough to ensure that everything was melted together.

If this holds I think I'll give it some mechanical stength by filling
the area around the post with standard expoxy.

My conductive expoxy hasn't arrived yet but I'm guessing that the
tin/silver solder is a better solution from an electrical standpoint.

Thanks for all on this forum who helped me out. I'm forever in your
debt.

Thankfully I didn't do any damage to my speaker while dremelling.

You guys rock!
Vernon