Does anyone have a good explanation of metric hole and shaft tolerancing (like H7/g6, etc.)? There are tables floating around on the internet that allow one to determine actual size ranges from the call-outs, but I still find this system to be cryptic and unnaturally complicated. Who invented this system? What's the rational for the various letter and number combinations? How common is this system world-wide? Why does it look so similar to thread tolerancing? Surely there's a better way!
John On Wednesday 28 January 2004 15:29, Chimpsarecute wrote: > Default metric fastener thread tolerance class. If thread tolerance class > designation (e.g., "-6g") is omitted (e.g., M10 x 1.5), it specifies > "medium" thread tolerance, which is 6H/6g. The 6H/6g fit is the standard > ISO tolerance class for general use.
