3 inch strap harware?

[Steel-Junky]

Hi all. I'm getting into making my own harnesses, sheaths, slings, and stuff like that. I've decided to go with 3 inch webbing because I find it to be the most comfortable as it digs in less when supporting heavier loads like a rifle or small shoulder bag. The thing is... I'm having trouble finding harware to go on 3 inch webbing. Especially D-Rings... I got 3 inch tri-glides, 3 inch side release buckles, but can't seem to find 3 inch D-Rings. Anyone know a good source to find metal strap harware that goes up to 3 inches? I think I'm gonna have to deal with 1.5 inch to 1 inch sling hooks though... I don't think anyone makes anything that doesn't swivle (Which I hate on a sling) in 3 inch. All links, or info is greatly appreciated here.

If I can't find a 3 inch D-Ring... I guess I'll have to try my hand at making some in the old vise.