914World.com [Powered by Invision Power Board]

Posted by: Olympic 1.7 Oct 15 2014, 09:23 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

Posted by: mskala Oct 15 2014, 09:43 AM

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.

Posted by: Mike Bellis Oct 15 2014, 09:43 AM

Seatbelt should be a 7/16" thread in the US.

Posted by: Racer Chris Oct 15 2014, 09:47 AM

QUOTE(mskala @ Oct 15 2014, 10:43 AM)

SAE 7/16-20.

precisely.

Posted by: wilchek Oct 15 2014, 05:53 PM

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/B0006G4MVQ/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1

Posted by: injunmort Oct 15 2014, 06:00 PM

7/16 20 tpi as said, dot mandated

Printable Version of Topic