5310-00-679-6027 WASHER,FLAT Index 5365-00-679-6030 SPACER,RING

National Stock Number:
5310-00-679-6029

Federal Supply Class:
5310

National Item Identification Number:
006796029

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:
2620-823REVAPC296169ELECTRIC BOAT CORPORATION
SS845-1889668 PIECE 280064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.000 INCHES NOMINAL
OVERALL DIAMETER1.125 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-944,COMP A 1/2H MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE FINISH32.0 MICROINCHES INNER
SURFACE FINISH63.0 MICROINCHES BOTTOM
SURFACE FINISH63.0 MICROINCHES OUTER
SURFACE FINISH63.0 MICROINCHES TOP
THICKNESS0.108 INCHES MINIMUM AND 1.113 INCHES MAXIMUM


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