5310-00-285-8190 WASHER,FLAT Index 5310-00-285-8198 WASHER,FLAT

National Stock Number:
5310-00-285-8197

Federal Supply Class:
5310

National Item Identification Number:
002858197

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:
47-631-102-104614TEXTRON SYSTEMS CORPORATION
47-631-102-180070LOCKHEED MARTIN CORPORATION


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING70.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM
HOLE DIAMETER0.563 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-C-6183 TYPE 2,CLASS 2 GR A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALCORK OVERALL
OVERALL DIAMETER1.125 INCHES NOMINAL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.125 INCHES NOMINAL


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