interference fit

interference fit

A type of fit used when assembling certain mechanical devices. The hole is made smaller than the part that fits into it. The material containing the hole is heated to expand the hole, and the part that fits into the hole is chilled to shrink it. The parts are assembled, and when they reach the same temperature their fit is so tight they will not loosen in service.

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Part of Speech: noun
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Industry/Domain: Aviation
Category: Aircraft maintenance; Powerplant
Company: FAA
Product: The Aviation Maintenance Technician Handbook—Powerplant
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