Hey, putting my box back together and it’s been so long that I forget where these braces go. Anyone have the answer? And yes I realize I’m missing one.
56 f100

Mystery brackets

 

I have 2 56's , and i've never seen those parts before .

 

I believe they are part of the box assembly ..it's been a long time since I took the old box off. Ended up buying a complete new one which doesn't come with those brackets but if memory is correct I think they help support the fenders from underneath front and back..and under the 2 center cross members, narrower ones to the back

 

I believe they go on the outside corners of the box crossmembers. The front ones go on the inside of the channel. The rear ones go on the inside channel of the rear bed panel. Sorry I don't have correct nomenclature and can't do pictures.that would have made this self explanatory. If you have more questions I will try to help.
They bolt or weld to the cross member and the down angle bolts to the bedside.

 

Without going out to look I believe they support the short pieces at the front of the box that fill in the open area down to the running board .

 

I’ve tried all over under the bed. Problem is that the two holes on each of them aren’t wide enough to bolt to the bed bolts. But some how I think that’s what they are supposed to do. I’ll keep trying but a picture of them installed sure would be handy. i am sure the studs are part of the fender mounting. Darn this is confusing.

 

So far this is like proof of the Loch Ness Monster or Bigfoot. We need good clean pictures of these pieces in their natural environment.

 

I don't recall seeing those before. I have recently gone through some boxes trying to record what is in them. I have found a few things I can't identify but those brackets are not among them! So they might be something else I need to buy or make

 

m1e9r5c6 ,It looks like your question is getting lost. I got my old cross members out and took some photos with my phone . I don't know how to but them on the forum. I can message or email from my phone if you want to send your info ,that is if you still need it. Dean 56exp