5310-01-546-5272 WASHER,FLAT Index 1560-01-546-5274 PANEL,STRUCTURAL,AIRCRAFT

National Stock Number:
5310-01-546-5273

Federal Supply Class:
5310

National Item Identification Number:
015465273

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:
MA3453-0300U583SAE INTERNATIONAL
MA3453-03081343SOCIETY OF AUTOMOTIVE ENGINEERS INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MATERIALIRON ALLOY 660 OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESTHIS IS A METRIC WASHER.


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