Product Details | VALVE SEAT

4820-00-304-3968 A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.20248100015Valves, Powered48200018Valves, Nonpowered

Part Alternates: 255753PC9, 4820-00-304-3968, 00-304-3968, 4820003043968, 003043968

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 12 OCT 1973 00-304-3968

Drawings & Photos | NSN 4820-00-304-3968


Demand History | NSN 4820-00-304-3968

Part Number Request Date QTY Origin
4820-00-304-3968 2023-12-341 118 DIBBS
4820-00-304-3968 2021-04-116 174 DIBBS
4820-00-304-3968 2021-04-105 174 DIBBS
4820-00-304-3968 2021-01-03 162 DIBBS
4820-00-304-3968 2020-10-303 91 DIBBS
4820-00-304-3968 2019-04-111 137 DIBBS
4820-00-304-3968 2017-08-241 83 DIBBS
4820-00-304-3968 2013-06-157 211 DIBBS
4820-00-304-3968 2013-05-142 211 DIBBS

Cross Reference | NSN 4820-00-304-3968

Part Number Cage Code Manufacturer
255753PC9 43689 HUNTINGTON INGALLS INCORPORATED DIV NEWPORT NEWS

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Technical Data | NSN 4820-00-304-3968

Characteristic Specifications
STYLE DESIGNATOR B6 PLAIN
OVERALL HEIGHT 0.313 INCHES NOMINAL
BODY OUTSIDE DIAMETER 1.747 INCHES NOMINAL
BODY INSIDE DIAMETER 1.000 INCHES NOMINAL
MATERIAL PLASTIC POLYAMIDE OVERALL
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE ANGULAR
SEAT ANGLE IN DEG ANY ACCEPTABLE
SPECIAL FEATURES WEAPONS SYSTEM ESSENTIAL
CRITICALITY CODE JUSTIFICATION FEAT
III END ITEM IDENTIFICATION SUBMARINE VERTICAL LAUNCH SYSTEM(VLS),STURGEON CLASS SSN(637),LOS ANGELES CLASS SSN(688),YELLOWSTONE CLASS AD-41

Restrictions/Controls & Freight Information | NSN 4820-00-304-3968

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 051080 FAUCETS,BIBCOCKS,GATES VALVES
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 576 unknown
Originating Activity Code AX Defense Supply Center Columbus
Columbus, OH 43216-5000
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 4820-00-304-3968

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 CodesDDoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each