3120-00-580-0089 BEARING,WASHER,THRUST Index 3120-00-580-0092 BUSHING,SLEEVE

National Stock Number:
5310-00-580-0090

Federal Supply Class:
5310

National Item Identification Number:
005800090

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:
675883524617GENERAL MOTORS CORP
675883530379EUCLID INC
834882119207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
675883573342ALLISON TRANSMISSION INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING60.0 ROCKWELL B MAXIMUM
HOLE DIAMETER1.040 INCHES MINIMUM AND 1.050 INCHES MAXIMUM
OVERALL DIAMETER2.100 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONG-4077A FSCM 73342 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE FINISH50.0 MICROINCHES BOTTOM
SURFACE FINISH50.0 MICROINCHES TOP
THICKNESS0.092 INCHES MINIMUM AND 0.094 INCHES MAXIMUM


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