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The Feature Control Frame (rectangular box) contain the geometric characteristics symbol, and the form, runout or location tolerance. You can find more information on this PDF. The M within a circle stand for Maximum Material Condition (MMC)

"24x" means that the description is true for the 24 pins of the part.

The Feature Control Frame (rectangular box) contain the geometric characteristics symbol, and the form, runout or location tolerance. You can find more information on this PDF. The M within a circle stand for Maximum Material Condition (MMC)

The Feature Control Frame (rectangular box) contain the geometric characteristics symbol, and the form, runout or location tolerance. You can find more information on this PDF. The M within a circle stand for Maximum Material Condition (MMC)

"24x" means that the description is true for the 24 pins of the part.

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source | link

The Feature Control Frame (rectangular box) contain the geometric characteristics symbol, and the form, runout or location tolerance. You can find more information on this PDF. The M within a circle stand for Maximum Material Condition (MMC)