Product Details | FLAT WASHER

5310-01-569-9491 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: 5613-37-.016, 56133716, 5613-37-16, 5310-01-569-9491, 01-569-9491, 5310015699491, 015699491, 561337016

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 11 DEC 2008 01-569-9491

Demand History | NSN 5310-01-569-9491

Part Number Request Date QTY Origin
5613-37-16 2025-07-201 50 DIBBS

Cross Reference | NSN 5310-01-569-9491

Part Number Cage Code Manufacturer
5613-37-.016 86928 SEASTROM MANUFACTURING CO., INC. DBA SEASTROM MANUFACTURING
5613-37-16 86928 SEASTROM MANUFACTURING CO., INC. DBA SEASTROM MANUFACTURING

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Technical Data | NSN 5310-01-569-9491

Characteristic Specifications
MATERIAL RUBBER NEOPRENE OVERALL
CROSS-SECTIONAL SHAPE STYLE RECTANGULAR
PERIPHERAL SHAPE STYLE ROUND
THICKNESS 0.006 INCHES MINIMUM AND 0.026 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE ROUND
PART NAME ASSIGNED BY CONTROLLING AGENCY FLAT ROUND WASHER
OVERALL DIAMETER 0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM
HOLE DIAMETER 0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM
END ITEM IDENTIFICATION NAVY CODES LLIFBB477,LLJW3A110

Restrictions/Controls & Freight Information | NSN 5310-01-569-9491

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
Electro-static Discharge Susceptible:ANo known Electrostatic Discharge (ESD) or Electromagnetic Interference (EMI) sensitivity
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.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
NMF Description 194120 WASHERS/GASKETS/PCKG DVCS NOI
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 713 unknown
Originating Activity Code KE Naval ICP
Philadelphia, PA 19111
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 5310-01-569-9491

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesJNOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative