PRV is a very old design (1971). At that time 7x1mm may have been common. Perhaps a metric old-timer can verify. 8x1mm thread on banjo bolts is also rare now. Bill Robertson #5939 >--- In dmcnews@xxxxxxxxxxxxxxx, Martin Gutkowski <webmaster@xxxx> wrote: > Correct. Even over here M7 is a "funny" size. M3, 4, 5, 6, 8, 10 and 12 > are all commonplace. >