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Metric Thread tolerancing
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Posted by: Donutfish

02/14/2007, 20:35:23

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Hey there all, I am new to Metric threads and am having a hard time understanding tolerance grade and position. I really want to know specifically about an M4 x 0.4 thread. Is 6g tighter or looser than a 4g6g. Are there other acceptable fits in the Machinists handbook? Could you please advise me. I understand the UTS 2B and 3B fitting but am having a hardtime with the metric system.

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