Material conditions apply to features that can
vary in size.
The second
compartment contains the tolerance value. Depending on the control
type, the tolerance value is preceded by a diameter symbol and
followed by a material condition symbol.
Material
conditions apply to features that can vary in size:
At maximum material condition (symbol M,
also known as MMC), a feature contains the maximum amount of
material stated in the limits.
At MMC, a hole has minimum diameter, whereas a shaft has
maximum diameter.
At least material condition (symbol L,
also known as LMC), a feature contains the minimum amount of
material stated in the limits.
At LMC, a hole has maximum diameter, whereas a shaft has
minimum diameter.
Regardless of feature size (symbol S,
also known as RFS) means a feature can be any size within the
stated limits.
