4730-01-476-6286 PLUG,PIPE Index 4730-01-476-6289 FITTING,LUBRICATION

National Stock Number:
5310-01-476-6287

Federal Supply Class:
5310

National Item Identification Number:
014766287

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:
563-7285193-353711NAVAL SEA SYSTEMS COMMAND
728519353711NAVAL SEA SYSTEMS COMMAND
H696-1620-396169ELECTRIC BOAT CORPORATION
H6961620-3A96169ELECTRIC BOAT CORPORATION


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.500 INCHES NOMINAL
MATERIALSTEEL OVERALL
PERIPHERAL SHAPE STYLEROUND
PROPRIETARY CHARACTERISTICSPACS
OVERALL DIAMETER4.060 INCHES NOMINAL
THICKNESS0.500 INCHES NOMINAL


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