2805-00-474-9918 TUBE,METAL Index 5310-00-474-9921 WASHER,FLAT

National Stock Number:
5310-00-474-9920

Federal Supply Class:
5310

National Item Identification Number:
004749920

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:
GAA761223040FORD MOTOR CO FORD PARTS AND SERVICE DIV GOVERNMENT PART SALES
GAA761257526FORD MOTOR COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.280 INCHES NOMINAL
OVERALL DIAMETER2.760 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1019 OR STEEL COMP 1020 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
THICKNESS0.260 INCHES NOMINAL


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