MR2 Roadster Owners Club

The Workshop => Maintenance, Problems & Troubleshooting => Topic started by: ad_car_08 on April 28, 2018, 00:08

Title: Seat bolt size
Post by: ad_car_08 on April 28, 2018, 00:08
Can't seem to find it on the forum - wanted to replace the 4 bolts that secure the seat rails but can't find the size. Can anyone help?
Title: Re: Seat bolt size
Post by: Call the midlife! on April 28, 2018, 00:12
Quote from: ad_car_08 on April 28, 2018, 00:08
Can't seem to find it on the forum - wanted to replace the 4 bolts that secure the seat rails but can't find the size. Can anyone help?
Like most of the screws and fastenings they're not a standard size, I think the nearest would be M10 but the pitch is different
I mullered one of mine with the impact gun and tapped it out to M10 though. (Or was it M12?)


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Title: Re: Seat bolt size
Post by: ad_car_08 on April 28, 2018, 00:28
Yeah they look a bit unusual...
Just been scouring Google and the workshop/hand book pdfs but no joy
Title: Re: Seat bolt size
Post by: 8thumpers on April 28, 2018, 00:33
Quote from: ad_car_08 on April 28, 2018, 00:08
Can't seem to find it on the forum - wanted to replace the 4 bolts that secure the seat rails but can't find the size. Can anyone help?
Metric fine thread m10x1 I think
Title: Re: Seat bolt size
Post by: gazza1286 on April 28, 2018, 08:12
These bolts are fairly universal across the Toyota range. Go to any breakers yard and recover some. Or order from the dealer.
Title: Re: Seat bolt size
Post by: J03 on April 28, 2018, 11:49
M10 x 1.25  ;)
Title: Re: Seat bolt size
Post by: ad_car_08 on April 28, 2018, 18:05
Quote from: J03 on April 28, 2018, 11:49
M10 x 1.25  ;)

I went to screwfix and b&q, but M10 threads were too far apart compared to the seat bolt I had in my hand. I ended up speaking to a very helpful chap who, by the sound of his long and boring story about bolt sizes, was very knowledgeable in this field and ended up telling me it wasn't an M10 but an imperial size...
Still don't know where to get them from..
Title: Re: Seat bolt size
Post by: Call the midlife! on April 28, 2018, 18:11
Quote from: ad_car_08 on April 28, 2018, 18:05
Quote from: J03 on April 28, 2018, 11:49
M10 x 1.25  ;)

I went to screwfix and b&q, but M10 threads were too far apart compared to the seat bolt I had in my hand. I ended up speaking to a very helpful chap who, by the sound of his long and boring story about bolt sizes, was very knowledgeable in this field and ended up telling me it wasn't an M10 but an imperial size...
Still don't know where to get them from..
If it's not urgent then give Paul at TCB a shout, or do what's been said above and try the nearest scrapyard full of Avensis etc.
Otherwise carefully tap the holes out to metric M10 and use a nice, stainless from Screwfix like I did as it was Sunday and had to be done!


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Title: Re: Seat bolt size
Post by: Carolyn on April 28, 2018, 19:15
Your 'knowledgeable bloke' ain't so knowledgeable. It is NOT imperial.

I cleaned out the holes with a 10 x 1.25 tap and guess what?  The bolts went right in.

It's M10 x 1.25 mm pitch. It is NOT a standard or easy to find bolt.

Try one of our affiliate breakers - they are always taking seats out.
Title: Re: Seat bolt size
Post by: jonbill on April 28, 2018, 19:25
Plenty on ebay.
Title: Re: Seat bolt size
Post by: 1979scotte on April 28, 2018, 19:29
Quote from: Carolyn on April 28, 2018, 19:15
Your 'knowledgeable bloke' ain't so knowledgeable. It is NOT imperial.

I cleaned out the holes with a 10 x 1.25 tap and guess what?  The bolts went right in.

It's M10 x 1.25 mm pitch. It is NOT a standard or easy to find bolt.

Try one of our affiliate breakers - they are always taking seats out.

Glad you said it.
Did think that you would have as much chance of wining the lottery as finding an imperial size bolt on a Jap car.
Although I have been wrong before.
Title: Re: Seat bolt size
Post by: Call the midlife! on April 28, 2018, 19:49
Quote from: 1979scotte on April 28, 2018, 19:29
Quote from: Carolyn on April 28, 2018, 19:15
Your 'knowledgeable bloke' ain't so knowledgeable. It is NOT imperial.

I cleaned out the holes with a 10 x 1.25 tap and guess what?  The bolts went right in.

It's M10 x 1.25 mm pitch. It is NOT a standard or easy to find bolt.

Try one of our affiliate breakers - they are always taking seats out.

Glad you said it.
Did think that you would have as much chance of wining the lottery as finding an imperial size bolt on a Jap car.
Although I have been wrong before.
I imagine he's gone by the head size, the sparky at my work thought the strut bolts were imperial due to head size and the fact the nuts we had in store didn't fit right.


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Title: Re: Seat bolt size
Post by: tomaky on April 28, 2018, 20:22
Might be easier to ask me for some seat bolts haha

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Title: Re: Seat bolt size
Post by: ad_car_08 on April 29, 2018, 13:11
Hunted around every round here who might have the bolts in question, but the threads don't match.
In the end I relented and just ordered some off ebay and playing the waiting game