2815-01-484-6427 FLYWHEEL,ENGINE Index 2815-01-484-6429 PISTON,VALVE

National Stock Number:
5310-01-484-6428

Federal Supply Class:
5310

National Item Identification Number:
014846428

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:
2643-859-10 ITEM 2796169ELECTRIC BOAT CORPORATION
728665053711NAVAL SEA SYSTEMS COMMAND
845-7286650 ITEM 2753711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.650 INCHES NOMINAL
MATERIALPLASTIC ACETAL OVERALL
PERIPHERAL SHAPE STYLEROUND
PROPRIETARY CHARACTERISTICSPACS
OVERALL DIAMETER2.245 INCHES NOMINAL
THICKNESS0.125 INCHES NOMINAL


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