3020-01-465-9979 GEAR,RING,FLYWHEEL Index 6515-01-465-9981 MASK,AIRWAY,LARYNGEAL

National Stock Number:
5310-01-465-9980

Federal Supply Class:
5310

National Item Identification Number:
014659980

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:
3468AS130030003NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER
3468AS1300-230003NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER
91090A11839428MCMASTER-CARR SUPPLY CO


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.531 INCHES NOMINAL
OVERALL DIAMETER2.000 INCHES NOMINAL
MATERIALSTEEL CORROSION RESISTING OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESOFFERS AN EXTRA-WIDE BEARING SURFACE FOR SCREW HEADS TO ELIMINATE THE NEED FOR PATCHING HOLES; ALSO PERMITS USING SMALLER DIAMETER SCREWS
SURFACE TREATMENTZINC OVERALL
THICKNESS0.047 INCHES NOMINAL


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