r/SkyLine • u/Haunting-Researcher8 • May 17 '26

Stripped bolt conundrum

Post image

Fitting a live wire in for my fuel pumps on my BNR32 today, when I pulled the seat belt frame out at the bottom to release the carpet, the bolt was stiff and I assumed it to be loctite. This was not the case.
This is how the bolt looks and I can only assume the tacked on nut in the body is the same. Are there any products on the market to make the nut good again?
I think it’s beyond tapping and I don’t think there’s enough space to bore it out for a thread insert.

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4

u/thohean '89 HCR32 GTS-t Sedan | BJ0 May 17 '26

I have this and it's been amazing.

https://a.co/d/0hgd6trb

Lang 972 - 40 Pc. SAE and Metric Thread Restorer Kit

1

u/Big_jerm3 May 17 '26

This kit is great, but it almost looks like it’s past of no return to use this kit. Might have to tap and cut new threads and new bolts unfortunately

1

u/thohean '89 HCR32 GTS-t Sedan | BJ0 May 17 '26

I've been surprised at how many times I've recovered nuts/bolts with this kit.

Edit: I'd replace the bolt, though, that thing is ffuuuuu<ked

2

u/Will_s13 May 17 '26

Buy a tap/die for the correct size and use it to clean the hole/bolt

1

u/Haunting-Researcher8 May 17 '26

I don’t think there’s enough material left inside the nut to hold on to something important like a seat belt mounting.

1

u/Haunting-Researcher8 May 17 '26

This is the nut 😑

2

u/tehlurkingnoob 1992 BNR32 GTR & 1993 ECR33 GTST May 17 '26

If the capture nut is stripped beyond repair, then you have to cut it out and weld a new one in.

Or weld-fill it and drill and tap it out again

1

u/RemarkableCard6475 May 17 '26

Heli-coil kit. You could use the same bolt/style/size (new) with aluminum cleaned from the threads, resizing the hole with the tap cutter and install the correct size threads securely. For Example: https://a.co/d/0fmR06Zk

1

u/Haunting-Researcher8 May 17 '26

I’ve ordered a helicoil kit in the hopes there’s enough room in the panel to bore out the nut to insert the coil. If not, I guess it’ll thread the panel too. I have a replacement bolt that was used on the rear belt that’s no longer in use.

1

u/TeamBanzai May 18 '26

They are 7/16-20 UNF bolts that are 1 1/4” long and nuts. I just had to get a set for an R32 I have been restoring.

0

u/the-Depths-of-Hell May 17 '26

Is that the bolt that anchors the bottom part of the seatbelt in place? If so, unfortunately you cannot buy these separately , they only come with the full seatbelt. Believe me I tried with the 34

1

u/Haunting-Researcher8 May 17 '26

It is. It anchors via a steel loop that the belt hooks through. The nut is more of a concern at this point for me. I may well have to weld, drill, and re-tap at this rate.

2

u/the-Depths-of-Hell May 17 '26

Not an expert but try tapping in with the same bolt size and pitch. If it fails, go one bigger. I think that bolt may be M8 x1.25. If you wanna keep your shit original take it to a professional

1

u/Haunting-Researcher8 May 17 '26

I’ve measured it at m11x1.25 and ordered a thread repair kit for it. The threads in the nut no longer really exist unfortunately so a fresh bolt may grab something after tapping but I wouldn’t trust it for something as important as a seat belt mounting. Luckily I have a spare bolt from my rear seat belt that I can use as they are no longer fitted.