Product Details | FLAT WASHER

5310-01-031-8387 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: 2510072, 5310-01-031-8387, 01-031-8387, 5310010318387, 010318387

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 02 DEC 1976 01-031-8387

Drawings & Photos | NSN 5310-01-031-8387


Demand History | NSN 5310-01-031-8387

Part Number Request Date QTY Origin
5310-01-031-8387 2021-09-246 2384 DIBBS
5310-01-031-8387 2021-08-220 2384 DIBBS
5310-01-031-8387 2020-10-288 1208 DIBBS
5310-01-031-8387 2013-07-189 2517 DIBBS
5310-01-031-8387 2012-05-135 780 DIBBS
5310-01-031-8387 2011-04-108 417 DIBBS
5310-01-031-8387 2009-09-260 1600 DIBBS
5310-01-031-8387 2009-01-22 304 DIBBS

Cross Reference | NSN 5310-01-031-8387

Part Number Cage Code Manufacturer
2510072 10001 NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT

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Technical Data | NSN 5310-01-031-8387

Characteristic Specifications
MATERIAL STEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION A1S1 41L40 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT OXIDE FILM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
COLOR BLACK OVERALL
HARDNESS RATING 27.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
HOLE DIAMETER 0.190 INCHES MINIMUM AND 0.196 INCHES MAXIMUM
PERIPHERAL SHAPE STYLE 1 ROUND
OVERALL DIAMETER 0.407 INCHES MINIMUM AND 0.469 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE 1 ROUND
CROSS-SECTIONAL SHAPE STYLE 1 RECTANGULAR
THICKNESS 0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM
DEPARTURE FROM CITED DOCUMENT AS MODIFIED BY SPECIAL QUALITY CONTROL TESTING FOR MK 48 TORPED0
CRITICALITY CODE JUSTIFICATION ZZZW

Restrictions/Controls & Freight Information | NSN 5310-01-031-8387

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:UPrecious metal type is unknown
Criticality Code:YThe item does not have a nuclear hardened feature but does have other critical feature(s) such as tolerance, fit restriction or application.
Category Code Description
NMF Description 194160 WASHER OR GASKETS, IRON OR STEEL,
Less than car load rating
Less than truck load rating U 50.0
Water commodity Code 713 unknown
Originating Activity Code HD Naval Inventory Control Point
Mechanicsburg, PA 17055-0788
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 5310-01-031-8387

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 CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
Q
EA : Each