5305-00-655-5939 SCREW,MACHINE Index 5305-00-655-5950 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5310-00-655-5949

Federal Supply Class:
5310

National Item Identification Number:
006555949

Description:
WASHER,FLAT

Detail:
A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use SHIM. For items fabricated from ceramic or electrically rated materials by specification or industry standards use INSULATOR (1), WASHER. Excludes DISK, VALVE, graphite impregnated and lubricated items.


Manufacturer Information:
2063420KDP7KIDDE-FENWAL, INC.
20634216004DAVEY COMPRESSOR CO DIV OF KECO INDUSTRIES INC
2063425RQL2DRS ENVIRONMENTAL SYSTEMS INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.506 INCHES MINIMUM AND 0.526 INCHES MAXIMUM
OVERALL DIAMETER0.734 INCHES MINIMUM AND 0.766 INCHES MAXIMUM
MATERIALALUMINUM ALLOY OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-A-696 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
THICKNESS0.025 INCHES MINIMUM AND 0.035 INCHES MAXIMUM


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