5310-00-655-7548 WASHER,FLAT Index 5305-00-655-7557 SCREW,MACHINE

National Stock Number:
5310-00-655-7549

Federal Supply Class:
5310

National Item Identification Number:
006557549

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:
10121576A486GNIMIKKEISTOKESKUS NCB FINLAND
30-298-803-11K5294GE AVIATION SYSTEMS LIMITED
310-0740-58013499ROCKWELL COLLINS, INC.
5310PL06477689009HINSPEKTORAT WSPARCIA SIL ZBROJNYCH
G0006413K0967MBDA UK LTD
NAS620A416L80205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.250 INCHES NOMINAL
OVERALL DIAMETER0.463 INCHES MINIMUM AND 0.483 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/8,H32 OR H34 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 5052 OVERALL
PERIPHERAL SHAPE STYLEROUND
SPECIFICATION/STANDARD DATA80205-NAS620 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
THICKNESS0.032 INCHES NOMINAL


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