Seatbelt bolt

[ewenmaclean]

Hello,

not sure if this should be in the mechanical or bodywork section really. My passenger seatbelt gave up the ghost and is totally stuck so I need to replace it. I was trying to undo the bolt on the floor next to the seat where anchor is, but it turned a couple of times, and now it totally stuck solid.

I'd appreciate anyone's advice in how to get this undone. Many thanks in advance

Ewen

[kevtherev]

you mean the bolt that goes through the floor into the wheel well?

grind the nut off underneath

or use a hex socket and a big breaker bar.
won't matter if it shears
I can send you a new nut and bolt in the post (FOC)

[ewenmaclean]

Hello Kev,

thanks a lot for this. I will look out my bigger bar extension - I was hoping that might work (There's some scaffolding up the road too )

I'll see what I've got, but I'll PM you if I need the nut - thanks a lot for that!

Ewen

[kevtherev]

Nice new shiny plated bolt and nut ..with a nice new galvanised 1/4" thick spreader plate for the wheel well.......mmmmmmm!

tempting huh?

[ewenmaclean]

Very nice indeed - go on then - let me know how to pay you! Will I need to weld that on? (Sorry for daft question)

[kevtherev]

nah it will slip under the nut.

what size is the bolt? (i.e. M10 X 30)... I forget
no money please..
just PM me your address and the bolt and nut size

[ewenmaclean]

Thanks a lot! Very generous! Hopefully I can return the favour soon. PM sent.

I'm afraid I don't know the spec of the nut and bolt - I will check tomorrow if I manage to get it off.... I know it's a 17mm head....

[colinthefox]

The bolts are 7/16 UNF

[kevtherev]

Ah that may be a legal requirement I don't know
unf is a fine thread innit?

would a metric replacement bolt be OK?
what size would it have to be?

[ewenmaclean]

Hi Kev,

The equivalent I believe is M11 x 1.25 which will apparently work

7/16" = 11.1mm
20 threads/inch = 1.27mm/thread

This is the standard seatbelt bolt and I think I have one anyway which will fit. My van's got a square welded nut under the wheel arch - it's still fine and in tact after I stud-extracted the old bolt which I presume was loctited. I reckon just a new bolt will do the trick.

Thanks a lot for all the help and offers of shiny new nuts!

Ewen

[kevtherev]

Ok ..
I could have offered an M12 bolt.. as long as you're sorted

[ewenmaclean]

Thanks a lot for your generosity - I really appreciate it. The bolt is seriously loctited, so if I can't get it out with heat and swearing, and I have to grind off the square nut then I'll be in touch!