5325-01-561-9278 INSERT,PANEL FASTENER Index 6140-01-561-9280 BATTERY,STORAGE

National Stock Number:
5310-01-561-9279

Federal Supply Class:
5310

National Item Identification Number:
015619279

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:
2994306VU4EAGLE COMPONENTS, INC.
91166A32039428MCMASTER-CARR SUPPLY CO
L1401250ADD7BAE SYSTEMS ADVANCED TECHNOLOGIES INC
L140125-200EER9ANIXTER INC.
L140125-2019397BAE SYSTEMS INFORMATION & ELECTRONIC SYSTEMS INTEGRATION INC.


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CENTER HOLE WIDTH21.0 MILLIMETERS NOMINAL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER20.0 MILLIMETERS NOMINAL
MATERIALSTEEL OVERALL
PERIPHERAL SHAPE STYLEROUND
PROPRIETARY CHARACTERISTICSPACS
OVERALL DIAMETER37.0 MILLIMETERS NOMINAL
SURFACE TREATMENTZINC OVERALL
THICKNESS37.0 MILLIMETERS NOMINAL


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