Hard to find bolts.....
If you can find an allen head 12mm bolt with a section of unthreaded shank, just buy a 12 x 1.5 mm threading die and make your own! I recently ran into the same situation needing a 12 x 1.5 bolt for a transmission mount. The local hardware store which has a pretty good assortment of metric hardware only had the 12 x 1.25 and 12 x 1.75 bolts. I bought the longest 12 mm bolt they had and was able to thread the shank to 1.5mm pitch. You will probably need a bench vice to hold the bolt while rethreading. While cutting the new threads, back off the threading die a little bit every couple of turns to clear the metal from the cutting teeth. Also, be sure to use plenty of cutting oil to make the job go easier.
Good Luck!
Fred Cook
'80 911SC coupe
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