Missing thumb screw

[stuffandthat]

Not sure if this is the right thread, but hopefully someone can help. I'm missing one of the nuts from the tube rings from a Celestron 130EQ. I need to replace it, but have no idea what they're actually called or where to find them. I've (hopefully) attached a pic with what I'm talking about!

[LewisM]

Find out the thread size and then buy something suitable from here: https://www.ebay.com.au/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=thumb+nuts&_sacat=0

Lots to chose from

[stuffandthat]

Perfect! Thanks for you help.

[Ukastronomer]

Have you asked Celestron ?