5305-00-013-9990 SCREW,MACHINE Index 5975-00-013-9993 MOUNTING BASE,ELECTRICAL EQUIPME

National Stock Number:
5310-00-013-9992

Federal Supply Class:
5310

National Item Identification Number:
000139992

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:
4197470-4D9182ZF INDUSTRIEANTRIEBE WITTEN GMBH
MS9549-170U583SAE INTERNATIONAL
MS9549-1781343SOCIETY OF AUTOMOTIVE ENGINEERS INC
MS9549-1796906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MS9549170P012H. V. MODY, INC.


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.771 INCHES MINIMUM AND 0.786 INCHES MAXIMUM
OVERALL DIAMETER1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 321 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE FINISH63.0 MICROINCHES BOTTOM
SURFACE FINISH63.0 MICROINCHES TOP
THICKNESS0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM


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