5340-01-531-2963 CAP,PROTECTIVE,DUST AND MOISTURE Index 5360-01-531-2965 SPRING,HELICAL,COMPRESSION

National Stock Number:
5310-01-531-2964

Federal Supply Class:
5310

National Item Identification Number:
015312964

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:
343-.045SS12(A-1.50)51506ACCURATE SCREW MACHINE CORP
90313A11039428MCMASTER-CARR SUPPLY CO
A3278657-00351506ACCURATE SCREW MACHINE CORP
A3278657-00380063US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.344 INCHES NOMINAL
OVERALL DIAMETER1.500 INCHES NOMINAL
MATERIALSTEEL CORROSION RESISTING OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.063 INCHES NOMINAL


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