4820-00-209-1770 VALVE,VENT Index 4320-00-209-1772 PUMP,ROTARY

National Stock Number:
5310-00-209-1771

Federal Supply Class:
5310

National Item Identification Number:
002091771

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:
516038024617GENERAL MOTORS CORP
516038072582ROLLS-ROYCE SOLUTIONS AMERICA INC
51603807X677GENERAL MOTORS LLC
FFW92TYPEAGRADE1CLASSA81348FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
PC5160380C7432POWER COMPONENTS (DEUTSCHLAND) GMBH


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY ID
HOLE DIAMETER1.0625 INCHES NOMINAL
OVERALL DIAMETER1.750 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATAA TYPE AND 1 GRADE AND A CLASS
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.108 INCHES MINIMUM AND 0.160 INCHES MAXIMUM


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