Thread: Why 16, 18 mm ?
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Old 11-22-2002, 12:04 PM
Fimum Fit
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Are you getting genuine German bolts?

For as long as I can remember (>50 years) the European car makers have stuck to a 8, 10, 13, 17, 21 set of head sizes (occasionally a 12, but rarely) unless there was a serious reason for something in between, but the Japanese cars and other mechanical devices have often also had 9, 11, 12, 15, 16, 18, etc, along with a tendency to use many more fine and coarse pitch variations than the Europeans.
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