Are there stores that sell nutserts or equivalents in 1/2" or M12 size? I'm attaching seat brackets in a van and I'd like something I can remove in the future without going under the van. I suppose I can install the brackets with regular nuts then have the nuts welded to the underside of the floor. Other ideas?

Thanks,
Sixto
87 300D

You can check hotrod chassis specialty supply houses-you have to get the special crimping tool. I have seen ones that require a hex shaped hole -pierced so the nutzert wont spin. it may be easier to zap a couple nuts in from the underside if you can get acess.

I have some, but they are smaller than you are looking for. I think they are #8 or maybe #10. I'm pretty sure I can find them in my old shop. If the small ones will work for you, how many do you need?

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

Look in the supplier section of Hemmings Motor News

I don't see anything that large.

McMaster-Carr

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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags

It sounds like sixto is wanting them fast, so he's looking for a local supplier.

BTW sixto, if you have a mig welder you can just tavk some nuts in place. You can also take some sheet metal and form a little cage that will hold a nut, and then tack that in place with the nut inside. This way the nut can move around a little making for easier alignment.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

For me, McMaster is as fast as getting it myself. I have called in an order at 3 PM, and had it in my hands by noon the next day no special handling/shipping charged. They seem to work 24 hours a day and ship when the order is placed.

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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags

Thanks, all.

Sooner is better than later so we can use the van. All I know about fastener sizing is the bolts used to hold the brackets to the donor vehicle. #10 is only smaller but is it too small? It's not a blind application, just an inconvenient application in terms of having to hold the nut in order to remove the bolt in the future.

I discovered a couple of mobility van conversion shops in the area and even a couple of shag-r-us shops (remember those?) stuck in the 70's. They might have something for me or some ideas.

Sixto
87 300D

why not go MB style and install U nuts. Thats how they are in my W124, if you cross thread them or strip them out install new ones by sliding them out.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)