5310-00-422-1672 WASHER,LOCK Index 5305-00-422-1676 SCREW,MACHINE

National Stock Number:
5310-00-422-1674

Federal Supply Class:
5310

National Item Identification Number:
004221674

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:
650054-196214RAYTHEON COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.015 INCHES NOMINAL
OVERALL DIAMETER1.400 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 6061 OVERALL
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESWASHER PRIMER PER MIL-P-15328 COAT WITH ZINC CHROMATE PRIMER COLOR YELLOR PER MIL-P-8585
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541,TYPE 1,GRADE C,CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541,TYPE 2,GRADE C,CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCHROMATE OR PAINT OVERALL
THICKNESS0.016 INCHES NOMINAL


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