Anybody know where I can locate some U nuts used for mounting mudflaps?
These I'm looking for have about a 1/4" acces hole on one side for carriage bolt to pass through and on opposite side there is a 1/8" square hole for a carriage bolt to fit into. Also where they slip onto the fender lip there are a couple of teeth or barbs to grip the fender. So far everywhere I have looked doesn't have these one hit wonders.

Now that's a confusing description...

Didja mean clipnuts????

Here's one link and a search on clipnuts will turn up more

Clipnut linky

Ken

Try McMaster-Carr Supply Company. They have Cage-Nuts, J-Nuts, U-Nuts, and Panel Nut Retainers. You can check them out on line, and they have great shipping to anywhere.