Chapter Maximum material and least material principles
Maximum material condition (MMC)
MMC is that condition of a part or feature which contains the maximum amount of material, e.g. minimum-size hole, or a maximum-size shaft. In certain cases its use allows an increase in the specified tolerance if it is indicated that the tolerance applies to the feature at its maximum material condition.
The maximum material principle takes into account the mutual dependence of tolerances of size, form, orientation and/or location and permits additional tolerance as the considered feature departs from its maximum material condition.
The free assembly of components depends on the combined effect of the actual finished sizes and the errors of form or position ...
Get Manual of Engineering Drawing, 3rd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
