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H6 - Federal Item Name Directory
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15930
WASHER,CONCAVE
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FIIG: A022B0
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Entry Date: Apr-01-1974
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Concept: 1
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Status: A
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Applicability: A
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Type: 0
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Definition: A washer which is round with a centrally located hole. One bearing surface is smooth, flat, and unbroken, the other bearing surface is smooth, unbroken, and is recessed to form a curved or spherical contour. See also WASHER (1), CONVEX. Excludes: WASHER (1), RECESSED and BEARING, WASHER, THRUST.
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Basic INC: 70650
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Basic Name: WASHER
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Description: 1. A perforated piece of metal, leather, or other material of various shapes and forms. It is used primarily as a seat for a bolt, nut, screw, rivet, or nail to distribute pressure and prevent endwise motion over an area, and/or to prevent movement between two parts by means of restraining features created by the shape of its edges.
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Corresponding NIINs: 657
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