7540-00-149-0891 FORM,PRINTED Index 5310-00-149-0896 WASHER,FLAT

National Stock Number:
5310-00-149-0893

Federal Supply Class:
5310

National Item Identification Number:
001490893

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:
CVC754-418D980378TRIUMPH AEROSTRUCTURES, LLC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM
OVERALL DIAMETER0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/5,T3 OR T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6,T3 OR T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 2024 OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONCVA 9-4,CAGEC 80378 MFR REF SINGLE TREATMENT RESPONSE OR 208-9-64,CAGEC 80378 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
THICKNESS0.051 INCHES NOMINAL


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