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-   -   Seat Rail Bolt Replacement (http://www.perth-wrx.com/vb/mechanicals/65964-seat-rail-bolt-replacement.html)

Brett Allan 19-08-2016 06:25 PM

Seat Rail Bolt Replacement
 
Hey Lads,

Had a search but to no avail.

Pulling out my rear seats the other day I noticed one of the bolts is cooked and also bent....the ones that sit in the foot-well area

[IMG]http://www.ionthruster.com/sti/springinstall/1-seat-01.jpg[/IMG]

02 STI so GD.

I believe the bolts are the same as the ones that hold the seat rails in place...

So I wanted to order in 10 or so and replace the lot with Grade 5 + High Tensile in stainless or whatever is better than the shitty oem ones.

The question, does anyone know what size/pitch/thread and length they are?

From searching there is conflicting answers - M8 x 1.25, 3/8 x 1.5

Any ideas?

Thanks

nick73 19-08-2016 06:33 PM

Give West Coast Fasteners a call tomorrow, they usually have good quality stuff in stock at very reasonable prices. Take your bolts with you so they can match them up.

Bram 19-08-2016 07:16 PM

Almost all bolts used on subarus are metric or metric fine. One exception is seatbelt bolts. These are 7/16unf.

But i think the ones you have pictured there are just a regular m8x1.25 with a large washer.

type25 19-08-2016 07:27 PM

8 X 1.25 for rear seat

10 X 1.25 for front seats

Brett Allan 21-08-2016 02:50 AM

Thanks for the replies :)

Will source some when I am back in town

Bram 21-08-2016 07:22 AM

[QUOTE=type25;840782]8 X 1.25 for rear seat
[B]
10 X 1.25 for front seats[/B][/QUOTE]

Except for the front seats inner rear bolt. Which is a 7/16 UNF

Mcclacker 21-08-2016 09:18 AM

i should have some spare when I stripped the car for rally prep (didn't chuck any fastenings out) Currently overseas till next Sunday and give me a yell if you want me to check. I'm SOR

type25 21-08-2016 10:57 AM

It is worth putting a small amount of anti-seize on the threads too.

And yes Bram is correct. The inner rear bolt on the front seats is a typical manufacturer accepted standard seat belt bolt thread of 7/16 UNC.

Bram 21-08-2016 03:19 PM

[QUOTE=type25;840808]It is worth putting a small amount of anti-seize on the threads too.

And yes Bram is correct. The inner rear bolt on the front seats is a typical manufacturer accepted standard seat belt bolt thread of 7/16 [B]UNC[/B].[/QUOTE]

7/16 UNF NOT 7/16 UNC.

UNF is fine thread. UNC is coarse thread.

Although they are both the same diameter, the threads are not compatible.


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