Quote:
Originally Posted by Dezzy
Yep, that's what happens when you have a standard, and then change it but not every one follows.
The only one I know of is BA that has a fixed relationship factor of 1.75
Metric are common ISO sizes from around 1985 mostly the same as DIN standard, but from 1992 onwards ISO/ANSI have recommendations for some head sizes to be reduced, but not everyone followed. You may find some M10 with 16mm AF instead of 17mm and as you found out an M12 with 18mm AF.
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It can be so frustrating. Joking aside, if I’d not had one old slightly suspect looking 18mm socket I’d have been back out in the wife’s car to Machine Mart.
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2010 A8 SE Executive 4.2 FSI D4
2007 Mini Cooper S R56
2008 D3, gone, but not forgotten after 9 years and 90k.
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