5310-01-080-8958 NUT,PLAIN,ROUND Index 5330-01-080-8960 SEAL,PLAIN ENCASED

National Stock Number:
5310-01-080-8959

Federal Supply Class:
5310

National Item Identification Number:
010808959

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:
255753 PIECE 3043689HUNTINGTON INGALLS INC
2640-402X3 PIECE 1896169ELECTRIC BOAT CORPORATION
2641-405-11ITEM96169ELECTRIC BOAT CORPORATION
2641-809-40 ITEM 2496169ELECTRIC BOAT CORPORATION
845-4558738 ITEM 8653711NAVAL SEA SYSTEMS COMMAND
SS845-2050947 PIECE 1880064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.688 INCHES NOMINAL
OVERALL DIAMETER1.750 INCHES MINIMUM AND 1.751 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALNICKEL ALLOY 400 OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.140 INCHES NOMINAL


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