I need some help in regard to the three bolts for a B-18C block where the driver's side mount bracket bolts to the block. We know they are M10x40 and M10x60, but can't seem to nail down what the thread pitch is. 1.5 or 1.25?

I found this thread that lists some common bolt sizes, but not this bolt specifically. https://honda-tech.com/tech-misc-15/...5652/#27754427

19 and 21 on this schematic-


Any help would be appreciated. Thanks.

 

Pretty much every M10 and M12 bolt honda uses is a 1.25mm pitch

 

^ I agree.The shorter lengths are pretty easy to find but longer lengths get extremely hard to source.

 

Even the M14's are 1.25 thread. I recently had to locate the rear t bracket bolts for a hyrdo trans with DA bracket.