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List the Three Basic Types of Acquisitions and Identify the Purpose

question 69

Essay

List the three basic types of acquisitions and identify the purpose of each.


Definitions:

Allowance

The intentional difference in dimensions between mating parts to ensure a proper fit.

Basic Hole System

A hole basis system of fits in manufacturing where the hole is the component with the basic size, and the shafts are adjusted for different fits.

Basic Size

The theoretical exact size from which the limits of size are determined in dimensioning and tolerancing practices.

Tolerance

The allowable deviation from a standard measurement in the manufacturing process, determining how much a part can vary from a specified dimension.

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