Datum Mmc [360p]

Maximum Material Condition (MMC) is the state of a part feature where it contains the allowed by its size tolerance.

In Geometric Dimensioning and Tolerancing (GD&T), refers to applying the Maximum Material Condition (MMC) modifier to a datum feature in a feature control frame. While MMC on a toleranced feature creates "bonus tolerance," MMC on a datum creates datum shift , allowing the part to move or "float" relative to the inspection gauge. 1. Understanding the MMC Concept datum mmc

MMC is the smallest allowable diameter.

MMC is the largest allowable diameter.

When the Ⓜ symbol is placed after a datum letter (e.g., |A|BⓂ|), it signifies that the datum is referenced at its Maximum Material Boundary (MMB) . 2. The Core Difference: Bonus Tolerance vs. Datum Shift GD&T ASME Y14.5 Bonus Tolerance vs Datum Shift Maximum Material Condition (MMC) is the state of