5305-00-680-6649 SCREW,MACHINE Index 5310-00-680-6670 NUT,PLAIN,HEXAGON

National Stock Number:
5310-00-680-6656

Federal Supply Class:
5310

National Item Identification Number:
006806656

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:
327B507P00499207GENERAL ELECTRIC COMPANY
327B507P424446GENERAL ELECTRIC COMPANY
327B507P499207GENERAL ELECTRIC COMPANY
A370-11286928SEASTROM MANUFACTURING CO INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.220 INCHES MINIMUM AND 0.230 INCHES MAXIMUM
OVERALL DIAMETER0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
MATERIALSTEEL CORROSION RESISTING OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM


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