National Item Identification Number

01-332-3260

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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02750

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EATON AEROSPACE LLC
DBA ENGINEERED SENSORS DIV
15 DURANT AVE
BETHEL
CT
06801
203-796-6183

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14153

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55566

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R A F ELECTRONIC HARDWARE INC
95 SILVERMINE RD
SEYMOUR
CT
06483
203-888-2133

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Reference Numbers (Part Numbers)

KTP224A
LL-HQ7-0104
1277-25-SS-20

Required Categories

MATERIAL
SURFACE TREATMENT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
HOLE

Required Description

STEEL OVERALL
PASSIVATE OVERALL
QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVE