National Item Identification Number

00-297-9457

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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02622

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AMERICAN OPTICAL CO
14 MECHANIC ST
8007
SOUTHBRIDGE
MA
01550
508-765-2217

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78039

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LEICA INC
SURVEYING AND PHOTOGRAMMETRY SYSTEMS
1015 DOVER CT
LIBERTYVILLE
IL
60048
847-405-0123

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Reference Numbers (Part Numbers)

494027PC4
789PC18
789PC18

Required Categories

MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
HARDNESS RATING
HOLE DIAMETER;

Required Description

PLASTIC OVERALL
MIL-R-3584 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
75.0 DURO