Quick parts question for Acoustic aficionados

[nsubulysses]

Where can I get these cliffhanger-type nuts to hold the screws on this side of the 370? What are they called? I can't find them and don't know what they're called, so that's probably where my problems start.

[g1]

I'm not familiar with the round type or how they mount, I've only seen square.
They are usually called captive nuts or cage nuts or threaded inserts.

[The Dude]

The original "nut" was most likely heat pressed into the chassis when manufactured. I doubt you'll find anything although there might be someone here who has a fix for it. Short of soldering or welding a nut to the inside, there aren't many options. You could nibble it out to a square and install a captive nut. HOWEVER, seeing the countersunk screws on the side of the chassis makes me think there isn't much fudge room for having anything sticking out past the chassis (as in the snap edges of the captive nut).

[nsubulysses]

Ah yes captive nut is maybe what I need. I'm pretty sure the snap edges actually would fit without interfering with the chassis. I can't remember exactly but on other 370s I've seen I think it does have some type of smaller or circular captive nut that is black, like the screw.

Now that I know the name, I have a chance. Thanks.

Routing it for the square style captive isn't a bad idea and might be the end result but i hope I don't have to do it!

[Dave H]

The circular riveted nuts are called Nutserts

[52 Bill]

The circular riveted nuts are called Nutserts

He said Nutserts...

I've called then swage nuts.

[The Dude]

The circular riveted nuts are called Nutserts

I'm guessing you have to have the tool to use them? If so, it makes it a bit impractical for a "one-off" repair. Good to know, though. I was thinking the original part was maybe one of these?

[nsubulysses]

I believe the dude is right with the image posted above as the original nut insert for the 370s. Great info on this thread thanks to everyone.

[Gingertube]

Nutserts are great to use particularly where there is restricted access to the other side of the bolt hole - I spent 4 hours and hundreds of expletives one afternoon trying to get the lock washers and nuts onto just 4 off main chassis to cabinet securing screws on an old Ampeg Echo Twin. This would have been a 30 second job had nutserts been used. I use them a lot in the day job for building airborne equipment - of-course that means I can borrow the tool from work. Putting in the nutserts is a 10 second job so most metal working shops would probably be agreeable to you bringing your work into their shop using their nutsert tool. A six pack would almost certainly guarantee their cooperation.

Cheers,
Ian

[jbltwin1]

Used nutserts in the auto repair biz. They are what was used a lot of times when you mounted mirrors to the outside of a car. Used in trailers too. I bought the tool that looks like a marson rivet gun but with different tips and adjustments. We used a bunch of them for mounting factory luggage racks. Mike.