what fasterner should I use?

[-Dman100-]

I have a small chain that I've attached to a copper cap. The fastener works alright, but takes a bit too much space to fit properly. See the attached images. What is a better fastener or approach to attach the chain to the copper cap so it fit properly onto the top of the bottle?

Thanks.

 

[joecaption]

Looks like a piece of tubing, not a cap.
Toss that one out and drill a hole in the top of the cap and use an eye bolt to attach the S hook to.
http://www.uscargocontrol.com/Riggi...s-Stainless-Steel-Type-316-Non-Welded-1-4-x-1

 

[beachguy005]

Or just get a copper tubing end cap and solder the chain to the top of it.

 

[bud16415]

Copper tubing smash end flat in vise and round it off with a sander and drill a hole thru the flat for chain.