5310-01-210-0811 WASHER,FLAT Index 5310-01-210-0813 WASHER,FLAT

National Stock Number:
5310-01-210-0812

Federal Supply Class:
5310

National Item Identification Number:
012100812

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:
75A326526-200556387BRITISH AEROSPACE INC MILITARY SUPPORT DIV
75A326526-2005K0289BRITISH AEROSPACE MILITARY AIRCRAFT & AEROSTRUCTURES
75A326526-2005K1987BAE SYSTEMS PLC
75A326526-2005U9143BAE SYSTEMS (OPERATIONS) LIMITED


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER6.35 MILLIMETERS NOMINAL
MATERIALSTEEL CORROSION RESISTING OVERALL
PERIPHERAL SHAPE STYLESQUARE
PROPRIETARY CHARACTERISTICSPACS
SPECIAL FEATURESALL CORNERS 0.060 IN.RADIUS; 0.400 IN. RADIUS ONE SIDE
WIDTH ACROSS FLATS0.500 INCHES NOMINAL
THICKNESS0.156 INCHES MINIMUM AND 0.164 INCHES MAXIMUM


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