5310-01-224-8221 WASHER,FLAT Index 5310-01-224-8223 WASHER,FLAT

National Stock Number:
5310-01-224-8222

Federal Supply Class:
5310

National Item Identification Number:
012248222

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:
7157-0805-A24655GENRAD INC
7157-0805-A62849GENRAD INC EMT ELECTRONIC TEST MFG GROUP


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.183 INCHES MINIMUM AND 0.196 INCHES MAXIMUM
MATERIALCELLULOSE OVERALL
PERIPHERAL SHAPE STYLEROUND
PROPRIETARY CHARACTERISTICSPACS
OVERALL DIAMETER0.438 INCHES NOMINAL
THICKNESS0.031 INCHES NOMINAL


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