Dumb question - Solar Tactical grip wrap

[BJJ223]

I have a couple of these. They work great.

What is the name of the type of hardware used to bolt them together? The screw is pretty straightforward. But, the nut is unusual. I want to buy a couple replacements.

[NapalmCheese]

https://www.chicagoscrews.com

I believe.

[brianm767]

https://www.chicagoscrews.com

I believe.

Corrrect, I get them off Amazon, and EBAY, they come in different lengths.

[Barbarosa]

If you don't want to order them most feed/tack stores carry them in silver, brass and black.

[BJJ223]

Thanks. Thats it!