2040-01-531-7275 COVER,BOAT Index 5340-01-531-7277 CLAMP,LOOP

National Stock Number:
5310-01-531-7276

Federal Supply Class:
5310

National Item Identification Number:
015317276

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:
W221NAAW050HN436ANMA105047THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
WFMT0800USS8T865ANABCO FASTENERS, INC.


Techincal Specification:
HOLE DIAMETER0.530 INCHES NOMINAL
OVERALL DIAMETER1.370 INCHES NOMINAL
MATERIALSTEEL OVERALL
THICKNESS0.180 INCHES NOMINAL


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