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Jim Adney wrote: > The JIS (Japanese) standards tend to put about 1mm smaller > heads on the bolts compared to the DIN (German) standards. This > saves a few hundred thousand tons of steel per year in the auto > industry. I wonder if the new German cars now use the JIS > standard bolts, which have 12mm heads on the 8mm bolts, instead > of 13mm heads. Very interresting! I know that M8 used a 14 mm head when the M-standard was defined. Then, sometime in the 60s or 70s, the steel had better strength and the head was reduced to 13 mm. I have never seen this 12 mm head, but I tend to stay away from modern cars, especially japanese.. :-) Henrik Larsson, Sweden '64 and '68 Notches ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org