National Item Identification Number

00-281-4588

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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S0554

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TOKYO JUDOGI KOGYO CO.
TOKYO
JAPAN

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27068

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COLONIAL / HAN-DEE SPRING LLC
95 VALLEY STREET
P.O. BOX 1079
BRISTOL
CT
06011
860-589-3231

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31633

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77445

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81924

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ATOMIC ENERGY COMMISSION
OAK RIDGE OPNS OFFICE
155 CALIFORNIA AVE
E
OAK RIDGE
TN
37830

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Reference Numbers (Part Numbers)

191084
191084
191084
191084
191084
191084

Required Categories

MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
SURFACE TREATMENT
HOLE DIAMETER

Required Description

STEEL COMP 301 OVERALL
AMS 5519 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
PASS