"M8" refers to thread pitch.

I'm not to keen on metric fastoners - But I do beleive that "8-1" means 8 thread per 1mm.



Torx (with IS trademarked) is just the form of head on it. More commonly you'll see SHCS (socket head cap screw) FHCS (flat head cap screw) Carrage bolts, and Button head's. I recommend looking up "Industerial Fastoners" (with the correct spelling, of coarse) in your local yellow pages. The guy behind the counter will more than happy to assist you in finding the proper bolt, and depending on quanity, he might just give you it, and it's not even worth his time to ring up (their around $.08/ea.)

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-1983 VW Rabbit LS Diesel (5speed, VNT/Giles build)