Metal epoxy

[Henry S.]

Hey everyone. I need to insert a thread insert into a hole for a hinge for a heavy fridge door. The metal threads do not go very deep and there is a space past them in the hole surrounded by isolation. I was going to fill the space with metal epoxy and then insert the thread insert so that half of it is on the good threads and the other half is caught into the epoxy. I was wondering if anyone knows the best and strongest metal epoxy that is also easy to apply and insert (the hole is pretty narrow). Thank you for your help.

 

[no704]

You need a rivit-nut.

 

[The Cobbler]

yeah, I agree with the rivetnut , or something... but epoxy probably is not the right choice . a picture or 2 would be good .

 

[nadogail]

Once I got a machine running again with an insert from LocTite’s Quick Metal.

It ran until we got the order out, we were able to get appropriate repair parts

 

[Henry S.]

You need a rivit-nut.

thank you for the reply, i'll definitely look for those now.

 

[Henry S.]

Thank you everyone for the replys. Sorry for the late reply i'm still trying to figure out the site. Here is are the attached photos (sorry they are not the best quality). The middle one is the one I had to drill out and re tap bigger threads. The threads work and hold a screw but the backend of the hole was more narrow than i thought and i accidentally drilled off the metal in the back. you can kind of see the yellow towards the back which is insulation. I could just put the screw in and i'm pretty sure it will hold as it goes in and out just fine, but i'm trying to be extra safe because the door it will be holding up is pretty heavy. Again thank you for your help.

 

[csp]

That's definitely a candidate for a rivnut.

 

[no704]

Hard to tell from that photo. Looks like it might have been a riv nut? Any way they are pretty cheap and easy to install.

 

[Henry S.]

So the rivnuts came in today but i was wondering, do they need to fit into a smooth surface or can they go into the existing threads? Also would plus nuts work for this or are rivnuts better? Thanks again.

 

[no704]

Rivnuts need to go into the specific hole diameter, and the material needs to be within the specified grip range. Never heard of a plus nut.

 

[Henry S.]

Hi everyone i need some advice. i put in the rivnut but the screw for some bizarre reason isnt going in straight. the threads seem fine as i was able to tighten and untighten. do i need to drill the rivnut out and do it again or is this fine?

 

[no704]

Is your rivnut the correct grip range for the metal? Was there a burr on the backside of the hole? I’d likely just run with it! If you have extras might be worth trying just for your sanity.

 

[Henry S.]

grip range was correct and it seems pretty solidified in the hole even though i dont have access to the back. im really only concerned about the inside as its going to be holding a heavy fridge door.

 

[no704]

Could probably deburr the back of the hole with a (brain fart, swivel deburring tool). Is that a steel nut? I would not use Al for this.

 

[csp]

Your tool used to draw the rivnut tight must not have been square to the face when it was tightened. That's really the only way the threaded portion would be crooked like that.