4730-01-564-4289 ELBOW,HOSE TO BOSS Index 5995-01-564-4291 CABLE ASSEMBLY,SPECIAL PURPOSE,E

National Stock Number:
5310-01-564-4290

Federal Supply Class:
5310

National Item Identification Number:
015644290

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:
B1822BH360N80204AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER38.6 MILLIMETERS NOMINAL
OVERALL DIAMETER65.4 MILLIMETERS NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONAMSI B18.22M NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER FLAT
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESHARDENED
SURFACE FINISH5.1 MICROMETERS ALL SURFACES
SURFACE TREATMENTZINC OVERALL
THICKNESS7.7 MILLIMETERS NOMINAL


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