If you are going past the strength of 4 3/8s mounting bolts how big is the cable on his monster?
That is exactly what I was thinking! And why I was pretty much dumbfounded when I saw them intended to mount a winch bumper.
I know EXACTLY why they are using them: the design of their bumper makes a proper nut/bolt a bitch (I know, because I did it).
So they are after ease of installation (and probably less complaints from customers who don't know any better).
The cherry on top is using 3/8" hardware in existing holes that will accept 1/2". Again I know because I did it. (factory is 12mm fine-thread)
When all they really had to do was a proper weld-nut. I am sure the tolerances on the vehicles frame are tight enough that they would not have had problems.
I worked with these guys a couple years ago on a project. They sure put on a good show that they knew what they were doing. And that their stuff was top shelf.
Their facility is very nice and well equipped. I was pretty comfortable I was buying good stuff. I should have done more research!
Why yes, it is. Why?
People tie off vehicles to winch all the time.
Some things just need to be built/assembled for the worst case scenario. I think this is one of them.
In the big picture, opinions don't really mean shit. Even/especially mine. This is why I was digging for actual specifications on these fasteners.
We have both ends of the spectrum in here already for opinions.
Cole thinks those U-nuts will hold as much as the bolt that is threaded in to them. Over 6,000lbs if I am understanding him correct.
BT Fab thinks they are good for about 750lbs. Which I am sure is an educated WAG.
I tend to think BT is much closer to reality! Especially considering the size of the hole they are sliding that thing over.
Guys, lets not focus on the bolt. Was it not obvious in my very first post that the bolt was not necessarily my concern?
The stupid U-nuts are the point of focus here.
Only speaking for myself, but IIRC, you wrote that you replaced the recommended, supplied fasteners with a grade 8 bolt and nut. At this point, since that went in the assembly by your decision, isn't that what you should be thinking about? It's what you're on the hook for.
You already rejected the friggin' u nut (with good reason, IMO) and it's not in the assembly.
It isn't the winch that is the problem. And I am not tossing names around.
What is the give up point of the u-nuts?
Is it under a normal nut? How thick of a nut? How many threads needed to hit the max of the bolt?
How good are the threads in a u-nut vs a normal nut? Is the for sure bad looking u worse, better or equal to a normal nut?
Fully agree that to the eyeball such look like poop cheapo stuff. But engineering wise not so sure.........
You are worried that the yucky nuts will give up and fail pulling the bolt though them and cleaning their clock?