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Least Material Condition : GD&T Basics

Least Material Condition (LMC) is a condition of a feature (hole or pin) of a part where minimum material  condition exists. 

 


 

Least Material Condition For Shaft/pin

LMC for a hole will be largest hole size. E.g. for a hole of 15 mm diameter with tolerance limit of ± 0.2 mm, MMC will be 15.2 mm

 


 

 

Least Material Condition For Shaft/pin

LMC for a pin will be smallest size of the pin. E.g. For a pin of 15 mm diameter with tolerance limit of ± 0.2 mm, LMC will be 14.8 mm

 


 Maximum Material Condition Can be used with Following Geometric Tolerance:


 

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