I have yet to see any but the holes allow too much movement. I don't know what material they're made of. I have measured the stud 3/8" wide and 5/8" high in hopes of finding a retainer from a fastener company. If I find a suitable one I will post it. Thanks, Ernesto
Check with Fastenal. They have all kinds of fasteners, with all examples in books to make it easier to match them up. All you'd need is a sample retainer from a member or found in a junk yard to match it up. Oh, bear in mind, you may have to buy a box of a few dozen instead of a baggie full of how many you need.
Thanks, I looked at that company too. As you said the trick is eyeballing an example. I may just give them a call.
fasteners I'm going to look at several rubber grommets that fit the hole and will fit the stud. piece of cake. lol