National Item Identification Number

01-448-0943

National Stock Number

Item Name

WASHER,RECESSED

Federal Supply Class

5310

Description

A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes WASHER, CONCAVE, RETAINER, PACKING, and thrust type washers. See also SPACER, SLEEVE; and SPACER, STEPPED.

Commercial and Government Entity Code (Supplier Data)

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53711

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56878

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Reference Numbers (Part Numbers)

5749946 FIND 9
75775CY-12

Required Categories

MATERIAL
SURFACE TREATMENT
STYLE DESIGNATOR
HOLE DIAMETER
OUTSIDE DIAMETER;

Required Description

IRON ALLOY 660 OVERALL
ZINC OVERALL
26 RECESSED
0.752 INCHES MINIMUM AND
0.7