National Item Identification Number

01-189-4587

National Stock Number

Item Name

WASHER,FLAT

Federal Supply Class

5310

Description

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.

Commercial and Government Entity Code (Supplier Data)

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D9182

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83130

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BUFFALO PUMPS INC
874 OLIVER ST
NORTH TONAWANDA
NY
14120
716-693-1850

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82522

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PUGET SOUND NAVAL SHIPYARD AND
INTERMEDIATE MAINTENCE FACILITY
1400 FARRAGUT AVE
BREMERTON
WA
98314
360-476-3711

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Reference Numbers (Part Numbers)

CA10233-28 NI-C U-ALL0Y
CA10233-28 NI-CU-ALLOY
517-2299361 PC28

Required Categories

III END ITEM IDENTIFICATION

Required Description

COMBAT SYSTEM SUPPORT EQUIPMENT