1560-01-504-1904 PLATE,STRUCTURAL,AIRCRAFT Index 7025-01-504-1906 PRINTER,AUTOMATIC DATA PROCESSIN

National Stock Number:
5310-01-504-1905

Federal Supply Class:
5310

National Item Identification Number:
015041905

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:
10122337A486GNIMIKKEISTOKESKUS NCB FINLAND
MS51936-296906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.223 INCHES MINIMUM AND 0.228 INCHES MAXIMUM
OVERALL DIAMETER0.808 INCHES MINIMUM AND 0.864 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B121 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY 340 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTOXIDE OVERALL
THICKNESS0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM


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