5310-01-355-3679 NUT,SELF-LOCKING,CASTELLATED,HEX Index 5310-01-355-3681 WASHER,FLAT

National Stock Number:
5310-01-355-3680

Federal Supply Class:
5310

National Item Identification Number:
013553680

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:
2111007-429-298391ARKWIN INDUSTRIES, INC.


Techincal Specification:
HOLE DIAMETER0.297 INCHES NOMINAL
OVERALL DIAMETER0.625 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-290 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALNICKEL OVERALL
THICKNESS0.093 INCHES NOMINAL


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