5310-01-257-9140

Flat Washer

5310012579140 012579140 85977-201-1

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. View more Flat Washer

5310-01-257-9140 WASHER,FLAT 5310012579140 012579140

Managed by United States
NSN Created on 25 Jun 1987
Data Last Changed
November 2023
NATO Update Count
4
NATO Data Quality
5310-01-257-9140 WASHER,FLAT 5310012579140 012579140 1/1
NSN 5310-01-257-9140 (Generic Image) 1/1

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85977-201-1 A washer having a centrally located hole with a solid or laminated cross-section and two
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9140Flat Washer5310012579140 012579140 85977 Restrictions 5330-01-300-2561 DEMIL: A | DEMILI : | CRITICALITY

5310-01-257-9140 Demil Restrictions 5310-01-257-9140

DEMIL: A | DEMILI: 1 | CRITICALITY: X | HMIC: N | PMIC: A | EDC: | ADPEC:

5310-01-257-9140 is a Flat Washer that does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. Demilitarization of this item has been confirmed and is not currently subject to changes. This item is considered a low risk when released from the control of the Department of Defense. The item may still be subject to the requirements of the Export Administration Regulations (EAR) and the Code of Federal Regulations (CFR). This item is not suspected to be hazardous. This item does not contain a precious metal.

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