Product Details | VALVE SEAT

4820-01-251-3123 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: CV9S4501026, CV9-S4501-026, CV9S450102620, CV9-S4501-026-20, 4820-01-251-3123, 01-251-3123, 4820012513123, 012513123

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 17 MAR 1987 01-251-3123

Drawings & Photos | NSN 4820-01-251-3123


Cross Reference | NSN 4820-01-251-3123

Part Number Cage Code Manufacturer
CV9-S4501-026 80064 NAVAL SHIP SYSTEMS COMMAND
CV9-S4501-026-20 80064 NAVAL SHIP SYSTEMS COMMAND

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Technical Data | NSN 4820-01-251-3123

Characteristic Specifications
STYLE DESIGNATOR B5 PLAIN THREADED
OVERALL HEIGHT 1.190 INCHES NOMINAL
BODY INSIDE DIAMETER 1.248 INCHES NOMINAL
MATERIAL COPPER ALLOY SEAT
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE FLAT
THREAD SERIES DESIGNATOR UNS SINGLE THREADED PORTION
NOMINAL THREAD SIZE 1.747 INCHES SINGLE THREADED PORTION
THREAD QUANTITY PER INCH 18 SINGLE THREADED PORTION
(NON-CORE DATA) THREAD PITCH DIAMETERS IN INCHES 1.6580 TO 1.7020 SINGLE THREADED PORTION
THREAD LENGTH 1.060 INCHES NOMINAL SINGLE THREADED PORTION

Restrictions/Controls & Freight Information | NSN 4820-01-251-3123

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.
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 594 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 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
Type of Cargo Z No special type of cargo code applicable

Management | NSN 4820-01-251-3123

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