Product Details | RECESSED WASHER

5310-00-121-8318 A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes WASHER, CONCAVE, RETAINER, PACKING, and thrust type washers. See also SPACER, SLEEVE; and SPACER, STEPPED.

Part Alternates: H2040D, 5310-00-121-8318, 00-121-8318, 5310001218318, 001218318

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 25 OCT 1968 00-121-8318

Demand History | NSN 5310-00-121-8318

Part Number Request Date QTY Origin
5310-00-121-8318 2015-03-78 2 DIBBS
5310-00-121-8318 2014-10-293 2 DIBBS

Cross Reference | NSN 5310-00-121-8318

Part Number Cage Code Manufacturer
H2040D 52033 DAVID ROUND COMPANY, THE
H2040D 97384 AAI CORPORATION DBA TEXTRON SYSTEMS

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Technical Data | NSN 5310-00-121-8318

Characteristic Specifications
MATERIAL WOOL
HARDNESS RATING NOT RATED
HOLE DIAMETER 4.656 INCHES NOMINAL
OUTSIDE DIAMETER 10.875 INCHES NOMINAL
RECESS DIAMETER 4.844 INCHES NOMINAL
MATERIAL THICKNESS 0.188 INCHES NOMINAL
RECESS ANGLE 90.0 DEGREES NOMINAL
MANUFACTURERS CODE 52033
DESIGN CONTROL REFERENCE H2040D

Restrictions/Controls & Freight Information | NSN 5310-00-121-8318

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: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
NMF Description 194120 WASHERS/GASKETS/PCKG DVCS NOI
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 573 unknown
Originating Activity Code KZ Defense Supply Center Philadelphia
Philadelphia, PA 19101
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 5310-00-121-8318

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 CodesXSEMIACTIVE ITEM-NO REPLACEMENT (NON-STOCKED ITEMS) A potentially inactive NSN which must be retained in the supply system as an item of supply because (1) stocks of the item are on hand or in use below the wholesale level and (2) the NSN is cited in equipment authorization documents TO & E, TA, TM, etc., or in-use assets are being reported. 1. Items are authorized for central procurement but not authorized for stockage at wholesale level. 2. Requisitions for in-use replacement will be authorized in accordance with individual Military Service directives. 3. Requisitions may be submitted as requirements generate. Repetitive demands may dictate an AAC change to permit wholesale stockage.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each