4540-01-042-0541 HEATING ELEMENT,ELECTRICAL,NONIMMERSION TYPE Index 5330-01-042-0543 RETAINER,PACKING

National Stock Number:
5310-01-042-0542

Federal Supply Class:
5310

National Item Identification Number:
010420542

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:
2640-150 PIECE 2296169ELECTRIC BOAT CORPORATION
2640-150 PIECE 22CP03950NAVAL INVENTORY CONTROL POINT MECHANICSBURG
845-2007651 PIECE 2280064NAVAL SHIP SYSTEMS COMMAND
845-2007651 PIECE 22CP03950NAVAL INVENTORY CONTROL POINT MECHANICSBURG


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