Product Details | FLAT WASHER

5310-01-056-5488 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: 12012173, 5310-01-056-5488, 01-056-5488, 5310010565488, 010565488

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 25 FEB 1978 01-056-5488

Drawings & Photos | NSN 5310-01-056-5488


Demand History | NSN 5310-01-056-5488

Part Number Request Date QTY Origin
5310-01-056-5488 2023-01-10 4 DIBBS
5310-01-056-5488 2022-08-214 4 DIBBS
5310-01-056-5488 2017-01-25 3 DIBBS
5310-01-056-5488 2011-06-175 2 DIBBS

Cross Reference | NSN 5310-01-056-5488

Part Number Cage Code Manufacturer
12012173 19204 ARMY UNITED STATES DEPARTMENT OF THE

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Technical Data | NSN 5310-01-056-5488

Characteristic Specifications
MATERIAL STEEL COMP 1018 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION ASTM-A-108 ASSN STD ALL MATERIAL RESPONSES OVERALL
HOLE DIAMETER 0.505 INCHES MINIMUM AND 0.506 INCHES MAXIMUM
PERIPHERAL SHAPE STYLE 1 ROUND
OVERALL DIAMETER 0.980 INCHES MINIMUM AND 0.985 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE 1 ROUND
CROSS-SECTIONAL SHAPE STYLE 2 BLANK RECTANGULAR
THICKNESS 0.120 INCHES NOMINAL
OUTSIDE LEFT CORNER CHAMFER ANGLE 45.0 DEGREES NOMINAL
MANUFACTURERS CODE 19204
DESIGN CONTROL REFERENCE 12012173

Restrictions/Controls & Freight Information | NSN 5310-01-056-5488

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.
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 P 77.5
Less than truck load rating W Rating Variable
Water commodity Code 596 unknown
Originating Activity Code BF U.S. Army Armament and Chemical Acquisition and
Logistics Activity
Rock Island, IL 61299-6000
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity V Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT FF
Type of Cargo Z No special type of cargo code applicable