5310-00-205-7256 NUT,PLAIN,ROUND Index 5320-00-205-7273 PIN-RIVET

National Stock Number:
5310-00-205-7259

Federal Supply Class:
5310

National Item Identification Number:
002057259

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:
674096224617GENERAL MOTORS CORP
674096251226ASSOCIATED AEROSPACE ACTIVITIES INC
674096273342ALLISON TRANSMISSION INC
9039081-124617GENERAL MOTORS CORP


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.404 INCHES MINIMUM AND 0.413 INCHES MAXIMUM
OVERALL DIAMETER0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5080 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1035 OVERALL
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESOUTER PERIPHERY OF ONE BEARING SURFACE IS BEVELLED 0.656 IN. DIA OF SMALL BEARING SURFACE 0.078 IN. DEPTH OF UNBEVELLED PORTION OF THK
SURFACE FINISH63.0 MICROINCHES ALL SURFACES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
THICKNESS0.154 INCHES MINIMUM AND 0.158 INCHES MAXIMUM


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