5330-99-728-0179 5331-99-728-0181 O-RING

National Stock Number:
5310-99-728-0180

Federal Supply Class:
5310

National Item Identification Number:
997280180

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:
020170 R1 AS04499KCTX8MINISTRY OF DEFENCE, DES SHIPS,MARINE PROPULSION SYSTEMS, MARITIME
22111188U0202ROLLS-ROYCE POWER ENGINEERING PLC


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