Mazdaspeed Front seat bolt size and thread pitch

dkreighbaum70

dkreighbaum70

Greenie N00B Member
I have searched Google, maybe I’m not trying the right combination. I am needing to get a few seat mount eye bolts for my 4 point harnesses , can’t find the specs to these bolts to find a unit with clip-on eyes
Any help is appreciated, thanks in advance
 
I believe the thread pitch for the seat bolts is M10-1.25. The length is up to you. After the threads the hole goes down more than a few inches. So you can go longer than an inch.

Check out the thread on here about seat bracket mounted fire extinguishers. Folks had to go with a different sized head to make the bracket fit and a few posted up thread pitches. Should be the same on both gens.

I did the same thing years ago in my old car. One thing to be mindful of the width you’ll have to screw an eye bolt into. I had to really force mine to fit. They threaded fine but as I got closer to bottoming out the eye boots were rubbing on the seat bracket and I had to use a screw driver to drive them down.

I have my old eye bolts and they must be a different thread pitch because I tried them today and no bueno.
 
dkreighbaum70 said:
I have searched Google, maybe I’m not trying the right combination. I am needing to get a few seat mount eye bolts for my 4 point harnesses , can’t find the specs to these bolts to find a unit with clip-on eyes
Any help is appreciated, thanks in advance
Click to expand...

So it’s looks like the seat bracket should clear eye bolts easily. I confirmed the stock pitch at M10-1.25. The eye bolts I have are M10-1.50. Attached a few pics for reference.

Stock bolt
AD8D34E8-692A-400E-A30E-B792B18C8D74.jpeg

Eye bolt with plenty of space.
F00B8ED2-EA02-4CF6-83F7-6731C44864A4.jpeg
 
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