What are the benefits of Zero Position Tolerance at MMC.doc

What are the benefits of Zero Position Tolerance at MMC?
Zero Position tolerance at MMC is a method of tolerancing part features that includes the position tolerance value with the FOS (Feature of Size) tolerance and states a zero position tolerance at MMC in the feature control frame. Three benefits of zero tolerance at MMC are:
Increase size tolerance.
Prevent the rejection of usable parts
Reduce manufacturing costs.
Fig. 5-10 shows a drawing of the same part (Fig. 5-9) with a zero positional tolerance at MMC specified. Note that the maximum size limit of the clearance holes remains the same but the minimum was adjusted to correspond with a 14 mm diameter fastener. This results in an increase in the size tolerance fo