So when my inner longs were repaired, the attachment point for the seat belt on the drivers side was not put in. now I have this old lathe I've been playing around with and decided to make an insert to weld it there for the bolt. I find a bolt that fits and check the treads and it comes up 1.25, checking it with my tap & die set, its not 10 x 1.25 and the only 11 I have is 11x 1.50.
is this thing really a 11 x 1.25? .. What an odd size
Full Version: Seat belt bolts, Weird thread?
QUOTE(Olympic 1.7 @ Oct 15 2014, 11:23 AM) 
So when my inner longs were repaired, the attachment point for the seat belt on the drivers side was not put in. now I have this old lathe I've been playing around with and decided to make an insert to weld it there for the bolt. I find a bolt that fits and check the treads and it comes up 1.25, checking it with my tap & die set, its not 10 x 1.25 and the only 11 I have is 11x 1.50.
is this thing really a 11 x 1.25? .. What an odd size
Since I use beetle seat belts that came with hardware that fits the 914, I
did a search: SAE 7/16-20. Which makes sense as it is really close to 1.25mm
pitch and 11mm.
Seatbelt should be a 7/16" thread in the US.
QUOTE(mskala @ Oct 15 2014, 10:43 AM)
SAE 7/16-20.
precisely.
Yep that is what it is 11x1.25. This is what I used to make sure threads were clean.
http://www.amazon.com/gp/product/B0006G4MV...=UTF8&psc=1
http://www.amazon.com/gp/product/B0006G4MV...=UTF8&psc=1
7/16 20 tpi as said, dot mandated
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