Product Details | FLAT WASHER

5310-01-205-5771 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.

Part Alternates: A3782, A378-2, 72322042, 723220-42, 5310-01-205-5771, 01-205-5771, 5310012055771, 012055771

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 09 APR 1985 01-205-5771

Drawings & Photos | NSN 5310-01-205-5771


Cross Reference | NSN 5310-01-205-5771

Part Number Cage Code Manufacturer
723220-42 05869 RAYTHEON COMPANY DBA RAYTHEON
A378-2 86928 SEASTROM MANUFACTURING CO., INC. DBA SEASTROM MANUFACTURING

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Technical Data | NSN 5310-01-205-5771

Characteristic Specifications
MATERIAL COPPER ALLOY 230 OR COPPER ALLOY 240 OR COPPER ALLOY 260 OR COPPER ALLOY 268 OR COPPER ALLOY 342 OR COPPER ALLOY 353 OR COPPER ALLOY 11 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-B-613,HALF-HARD FED SPEC ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENT NICKEL OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-N-290 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HOLE DIAMETER 0.505 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
PERIPHERAL SHAPE STYLE 1 ROUND
OVERALL DIAMETER 0.700 INCHES NOMINAL
CENTER HOLE SHAPE STYLE 1 ROUND
CROSS-SECTIONAL SHAPE STYLE 1 RECTANGULAR
THICKNESS 0.032 INCHES NOMINAL

Restrictions/Controls & Freight Information | NSN 5310-01-205-5771

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information

Management | NSN 5310-01-205-5771

Category Code Description
Cognizance Codes9ZNavy-owned stocks of defense industrial material
Naval Inventory Control Point, Mechanicsburg
Source of SupplyS9IDefense Industrial Supply Center
Philadelphia, PA 19111
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesYTERMINAL ITEM #(NON-STOCKED ITEMS) Future procurement is not authorized. No wholesale stock is available for issue. 1. Requisitions will not be processed to the wholesale manager. 2. Internal Service/agency requisitioning may be continued in accordance with the Service/agency requisitioning policies.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative