4820-01-498-4205 VALVE,BALL Index 5905-01-498-4207 RESISTOR,CHIP,FIXED,FILM

National Stock Number:
5310-01-498-4206

Federal Supply Class:
5310

National Item Identification Number:
014984206

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:
596-7409356-1853711NAVAL SEA SYSTEMS COMMAND
B541-1305-1896169ELECTRIC BOAT CORPORATION


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.156 INCHES NOMINAL
OVERALL DIAMETER2.750 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-2765 MIL STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESSEAWOLF CLASS SS23 GEAR BOX
THICKNESS0.250 INCHES NOMINAL


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