Cleaning rusty nutserts?

[petrotk40]

What is the best way to do this? Tap and die set?

I want to add the 7th and 8th bolts on my rear bumper but since the nutserts had never been used they are quite rusty.

How do I know the correct tap to use?

Thanks!

 

[Trunk Monkey]

Correct, just get the right size tap and gently clean the threads out with it. Use lots of oil. Not sure what the thread and ptich is on the captive nuts back there, but you could take one of the other bolts in and have the threads measured.

 

[highonpottery]

metal wire pipe cleaner?

 

[petrotk40]

cool, thanks TM.

I'm going to need something way more serious than metal pipe cleaner. I think I'm going to try the *gasp* harbor freight route

http://www.harborfreight.com/60-piece-sae-metric-tap-and-die-set-35407.html

 

[highonpottery]

you should get a tap/die set regardless. a dremel with flat brush head would work perfect depending on the size of the nutzert of course

 

[petrotk40]

you should get a tap/die set regardless. a dremel with flat brush head would work perfect depending on the size of the nutzert of course

Hmm I do have one of those, I'll try that first. Thanks

 

[spressomon]

Should be M14x1.50

 

[Trunk Monkey]

Don't get too jiggy with the dremel, threads are more delicate than you think and they can remove more material than you think. Best would be to chase the threads with the tap . . .

 

[SHAGGY101]

I've always been a fan of squirting some penetrating oil/ lube on it and then jamming it in.

 

[bluecruiser]

I've always been a fan of squirting some penetrating oil/ lube on it and then jamming it in.

This works...

 

[petrotk40]

there is a thick buildup of rust in there, I tried this once and was unsuccessful.

oh and thats what she said.

 

[Hugh Heifer]

I think I'm going to try the *gasp* harbor freight route

http://www.harborfreight.com/60-piece-sae-metric-tap-and-die-set-35407.html

Don't waste your money. The dies are so soft they stretch and the taps are not very sharp. They may serve you okay for chasing a few threads but the only thing in the set worth anything is the box. Go with Hanson.

 

[spressomon]

If your rear frame threaded inserts are as rusted as mine were...I had a couple pop loose during the tapping process. I ended up fabbing a scab plate of sorts with nuts welded to the plate...which is welded to the frame...inserted from the open end of course

 

[APKhaos]

Forget the Dremel idea.
Buy decent taps. Cheaper to buy a few Hansens than a set of HF rubbish that only gives you one tap in the size you need.
Go slow and use a tapping oil. Tap Magic is a good example.

 

[Supra88]

I've been looking, but haven't had any luck finding replacement captive nuts for the rear bumper. M14 - 1.5 flange nut 10.9.

Any ideas?

 

[Supra88]

If your rear frame threaded inserts are as rusted as mine were...I had a couple pop loose during the tapping process. I ended up fabbing a scab plate of sorts with nuts welded to the plate...which is welded to the frame...inserted from the open end of course

I'm getting ready to build this same type of plate to install my Slee rear bumper. What type of 14-1.5 nut did you weld to the plate (flange nut?). Where did you find them? Any more details on these plates would be great.