Reply to "missing pieces"

After using my dial calipers and thread pitch gages which only cover American National Threads, I can tell you that the thread is NOT a 'National Fine'. After searching through the 'Machinery's Handbook the only thread that comes CLOSE is the 10mm(Dia.) X 1.5 Pitch. Although I suspect this is a 'Special' Bolt that is marked(on the head) "klippan 8.8". The dial caliper measures the Major Thread Diameter at just under 11 mm, at .428" the tap for this thread has a max. diameter of .410". Is this intentional in design so the bolt will thread 'in' tight to its' maximum root depth? Your guess is as good as mine! After all, it is ment to secure a shoulder harness/seatbelt, during a collision. Marlin. O.K. Here's the bummer; I remembered I had a set of metric taps, so I compared them with the original mounting bolt. This Bolt thread is FINER than 1.5 mm Pitch, AND it is COURSER than 1.0 mm Pitch, it would have to be a 1.25 Pitch! There is NO such animal in the Machinery's Handbook! The ONLY pitch for 10mm is 1.5, the ONLY bolt having a 1.25 Pitch is 8mm in Diameter. So there you have it! It has to be a specially machined item.

[This message has been edited by MARLIN JACK (edited 06-13-2004).]