What is this attaching hardware called?

[mipo]

I'm curious what you call the hardware that is used to attach the battery holder to the enclosure on this old PE Experience pedal... anyone know?

[stallik]

Battery clip. The one pictured looks like a Keystone product

Battery clip

[mipo]

Battery clip. The one pictured looks like a Keystone product

Battery clip

Sorry, not the clip, but the metal bolt-type things that affix the clip to the enclosure. They don't look like screws to me. Here is another internal picture:

[Mark Hammer]

Rivets?

[PRR]

The generic name is the early trademark: POP-RIVET. If you don't want to use the USM trademark, "blind rivet". You need a tool.

https://www.youtube.com/watch?v=bpyPQ0kvGyo
https://www.youtube.com/watch?v=ZyWqWJKAV6k
https://www.amazon.com/Meiwaltee-Professional-Suitable-Automotive-Projects/dp/B09BMR8XR7/
https://en.wikipedia.org/wiki/Rivet#Blind_rivets

[mipo]

Rivets?

The generic name is the early trademark: POP-RIVET. If you don't want to use the USM trademark, "blind rivet". You need a tool.
https://www.youtube.com/watch?v=bpyPQ0kvGyo
https://www.youtube.com/watch?v=ZyWqWJKAV6k
https://www.amazon.com/Meiwaltee-Professional-Suitable-Automotive-Projects/dp/B09BMR8XR7/
https://en.wikipedia.org/wiki/Rivet#Blind_rivets

Yep. That's it. I'd like to say the term was on the tip of my tongue, but it wasn't quite that close. Thanks guys. 

[stallik]

My bad, should have read the question properly.

PRR - always a learning day, had no idea that pop-rivet was a trademark. I just thought they were referred to as that because of the sound they made

[Elektrojänis]

PRR - always a learning day, had no idea that pop-rivet was a trademark. I just thought they were referred to as that because of the sound they made

Same here. Maybe the trademark was derived from the sound?