Speaker Plug Screw Thread Size

[gbroot]

Hi All. I've got probably 10 sets of plugs and am thinking of replacing all of the screws to new pretty shiny ones before selling some off. I took one plug with me to several hardware stores + home depot, lowes etc and drew a blank on replacements. Just couldn't get a match on the thread even with store personnel help. I'm thinking I'll have to go on line to find what I'm needing. Any one know what thread I'm looking for?

 

[bandg69]

Don't know thread your needing but if you have a machine shop in your area check with them

 

[redk9258]

Picture?

 

[rcs16]

Metric screws for Japanese gear. I am guessing 3-3.5-4mm diameter. You can measure them for diameter and pitch. Something to learn.
Any thoughts to just cleaning the tarnish off of them with deoxit?

 

[markthefixer]

why replace them, they are a special truss head - oversized head, with cross and flat blade drives, and a back side lock / anti back out face.

try deoxit, or even tarn-x to clean them up.

major diameter 3.40mm, minor diameter 3.25mm makes it a M3.5 x 0.6 screw. also not a common thread.

You would need a 3.5 x 0.6 x 5mm long truss head screw, with philips (cross) and flat blade drives, and an EXTRA internal or external tooth star washer.
Probably both in stainless to stay nice.

 

[rcs16]

Sounds like a McMaster-Carr or equivalent source for these special screws.
I can only cringe in anticipation of what he going to ask for them, based on what others are selling them for these days.
I just made up a few mickey mouse plugs for the qx-9900 that I bought recently. My $3 budget plugs at least have shiny screws

 

[gbroot]

Actually there's a screw or 2 missing on a couple of pairs. So just figured I'd go ahead and replace them all since some are very rusty. As always markthefixer comes to the recue. Exactly the data I needed. Actually I've got several very nice x2x series receivers including a gorgeous 424 I picked up today that had both sets of plugs that I will be selling off locally. Also have with a couple of nice 1500TD's that will go up for sale locally. They will all include a set of plugs. The extra sets of plugs left over I will sell off separately at fair market price or possibly take offers on BT. Guess I need to rejoin!