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.