National Item Identification Number

00-187-2366

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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57733

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STEWART-WARNER CORPORATION
7252 W. IBSEN
CHICAGO
IL
60631
773-763-9568

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36346

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UNION CARBIDE CORP
SUB OF DOW CO THE
39 OLD RIDGEBURY RD
DANBURY
CT
06817
203-794-6396

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80049

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Reference Numbers (Part Numbers)

AN940-8
41H08
41H08
6026-8273-32
6662
940-8
940-8

Required Categories

MATERIAL
SURFACE TREATMENT
HOLE DIAMETER
PERIPHERAL SHAPE STYLE
OVERALL DIAM

Required Description

STEEL OVERALL
TIN OVERALL
0.182 INCHES MINIMUM AND
0.193 INCHES MAXIMUM
1 RO