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914World.com _ 914World Garage _ seat belt nut?
Posted by: obscurity Jul 8 2007, 01:41 PM
I am still working on my hell hole repair. In fact I am still cutting metal out as I discover how far forward the rust has crept. I have had to remove the passenger seatbelt attachment nut and was curious if anyone makes a replacement or do I just need to fabricate one. If it is the latter does anyone know what size it is? Mine was hopelessly attached to the bolt. Unfortunately I am not at home to check the driver's side bolt.
I tried to find what size replacement belt bolds are but nobody seems to publish that. I assume that's because it is a standard?
Thanks for the info
Posted by: freezing14 Jul 8 2007, 02:58 PM
the only thing iknow is that it is not metric,, or the SAE is identical, I had to fabricate mine ,,
Posted by: xitspd Jul 8 2007, 03:09 PM
I will send you a Bolt, Washer and Nut from a 5 Point harness if it will help you. No-Charge
Dan
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Posted by: McMark Jul 8 2007, 03:13 PM
11 x 1.25 is the correct thread pitch for that nut.
Posted by: obscurity Jul 8 2007, 04:02 PM
i guess it is possible that they are just very similar. I found one reference to seatbelt bolts on http://wescoperformance.stores.yahoo.net who appears to deal with racing gear. They have a hardware mounting kit for sale that includes 7/16" fine thread(20tpi) bolts.
11 x 1.25 converts to 6.929/16 - 20.32 - Almost the same...
Interestingly my initial search of Mcmaster didn't turn up any 11mm nuts
Posted by: dr914@autoatlanta.com Jul 8 2007, 04:15 PM
"yeah" we make it. and weld it into our long replacement part
Posted by: obscurity Jul 8 2007, 05:21 PM
"yeah" we make it. and weld it into our long replacement part
Do you sell it separately!? I don't think I need the whole part just the nut. I suspect the whole part is pretty pricey
Posted by: Brian_Boss Jul 8 2007, 06:42 PM
I'm pretty sure that some stupid DOT requires seat belt anchor bolts to be 7/16NSF aka 7/16 - 20, even if every other fastener on the car is metric.
Posted by: dr914@autoatlanta.com Jul 9 2007, 08:49 AM
I'm pretty sure that some stupid DOT requires seat belt anchor bolts to be 7/16NSF aka 7/16 - 20, even if every other fastener on the car is metric.
very good point! we had to have the special weld in nut made!
Posted by: obscurity Jul 9 2007, 11:19 AM
I'm pretty sure that some stupid DOT requires seat belt anchor bolts to be 7/16NSF aka 7/16 - 20, even if every other fastener on the car is metric.
very good point! we had to have the special weld in nut made!
But do you sell it separately?
Posted by: John Jul 9 2007, 11:55 AM
The M11x1.25 tap threads in like it was made for it, while a 7/16-20 tap will attempt to cut new threads.
I know 7/16-20 seat belt bolts will fit as that is what most competition harnesses are supplied with.
I firmly believe that they were originally metric threads in our cars, but this debate has been held before. I even posted a picture of my M11x1.25 tap.....
Posted by: ChrisNPDrider Jul 9 2007, 01:56 PM
I know 7/16-20 seat belt bolts will fit as that is what most competition harnesses are supplied with.
Safety harnesses are on my To Buy list right now, and I was wondering if everyone racing was just screwing the 7/16 into the metric hole. Sounds like it is no big deal and there is enough thread engagement to pass tech inspection and be safe in an accident....if it worked for the last 30 years I am OK with it
Posted by: jd74914 Jul 10 2007, 03:21 PM
The M11x1.25 tap threads in like it was made for it, while a 7/16-20 tap will attempt to cut new threads.
I know 7/16-20 seat belt bolts will fit as that is what most competition harnesses are supplied with.
I firmly believe that they were originally metric threads in our cars, but this debate has been held before. I even posted a picture of my M11x1.25 tap.....
This is a little late, but yesterday I bought some grade 8.8 7/16 nuts to make new seat belt plates with, and the old bolts go in perfectly (the ones that were on the car). They feel exactly the same as 7/16 bolts threaded into the 7/16 nuts
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