3120-01-022-8940 BUSHING,SLEEVE Index 5310-01-022-8943 WASHER,FLAT

National Stock Number:
5310-01-022-8942

Federal Supply Class:
5310

National Item Identification Number:
010228942

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:
306365982577RAYTHEON COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND W/FLATS
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.115 INCHES MINIMUM AND 0.120 INCHES MAXIMUM
HOLE WIDTH ACROSS FLATS0.087 INCHES MINIMUM AND 0.092 INCHES MAXIMUM
LENGTH0.300 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11,TEMPER T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
PERIPHERAL SHAPE STYLERECTANGULAR
WIDTH ACROSS FLATS0.240 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541,CL 1A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCHROMATE OVERALL
THICKNESS0.040 INCHES NOMINAL


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