Rear door seat belt bolt size?

[foxpro Member Find all posts View Profile Close foxpro]

We fully loaded our car today for a 8 week trip. While doing so I unclipped the rear blank top covers of the 3rd row seat belts which our GX never had and found chassis nuts there which I would like to attach eye bolts for fastening to. Does anyone know the size of that bolt? Tried M10 and M12 but it is between those sizes. I only have tomorrow left to try and get it, so the Toyota dealer will not be open.
The part# is 90105-11041 and a diagram is found here: http://japan-parts.eu/toyota/gr/2014...t/4#9010511041
Thanks.

[AJ120 Out of control poster! Find all posts View Profile Close AJ120]

What pitch thread are you using to test these? they are likely fine pitch or 1.25 bolts, most commonly you will find metric bolts in 1.5 pitch. Never heard of a metric size between m10 and m12.

Cheers Andrew

[mjrandom Out of control poster! Find all posts View Profile Close mjrandom]

There is such an animal as M11 but it is far from common. From memory they are M12x1.25. M10 goes in without any need to twist it?

[Joe Lighty Member Find all posts View Profile Close Joe Lighty]

I've found many of the bolts relating to seats and seat belts in the Prado 150 are fine pitch (1.25) instead of the more common 1.5.

[foxpro Member Find all posts View Profile Close foxpro]

I tried the M10 and M12 screws I had at hand from various parts of the vehicle. The M10 went in just by wiggling it. The M12 feels a touch wide and doesn't catch at all. Wasn't a fine thread though. I will try to find a M12x1.25 tomorrow morning.

[AJ120 Out of control poster! Find all posts View Profile Close AJ120]

I tried the M10 and M12 screws I had at hand from various parts of the vehicle. The M10 went in just by wiggling it. The M12 feels a touch wide and doesn't catch at all. Wasn't a fine thread though. I will try to find a M12x1.25 tomorrow morning.

The bolts that hold the tow point to the chassis on the left rear will be 12x1.25 if you want to try one of those.

Cheers Andrew

[Mozz Member Find all posts View Profile Close Mozz]

I'm pretty sure there is a standard that relates to seat belt bolt sizes and even though every other bolt in the car is metric the seat belt ones are 7/16 UNF or at least that's how it has been in most vehicles I've worked on.

[AJ120 Out of control poster! Find all posts View Profile Close AJ120]

I'm pretty sure there is a standard that relates to seat belt bolt sizes and even though every other bolt in the car is metric the seat belt ones are 7/16 UNF or at least that's how it has been in most vehicles I've worked on.

I was doing some work on my 79 cruiser this morning and had a look at the seat belt bolt which I had to remove, they were 12 x 1.25mm

Cheers Andrew

[foxpro Member Find all posts View Profile Close foxpro]

I went to Repco today and a most helpful staff member there got me out a M12x1.25 and a M10x1.125 bolt. Both did not fit. So maybe the 7/16 UNF is correct. As my time is up I will have no chance to test it for a while. Might have a chance to pick one up in Darwin on the way through before hitting Tanami Road.

[mjrandom Out of control poster! Find all posts View Profile Close mjrandom]

I doubt it is UNF. Maybe 1mm pitch. I will have a look tomorrow if I get a chance. 7/16 UNF will screw into M12 fine thread but not vice versa.

[Mozz Member Find all posts View Profile Close Mozz]

There is a possibility it could be a 11mm x 1.25 This is an odd size that is used for such critical components like seat belts to prevent the use of lower grade bolts.