Product Details | VALVE SEAT

4820-01-103-3291 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: 2621-922-02 ITEM 56-3IN, 262192202ITEM563IN, 8451889553, 845-1889553, 845-1889553 PIECE 31-3IN, 8451889553PIECE313IN, 4820-01-103-3291, 01-103-3291, 4820011033291, 011033291

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 12 NOV 1980 01-103-3291

Drawings & Photos | NSN 4820-01-103-3291


Demand History | NSN 4820-01-103-3291

Part Number Request Date QTY Origin
4820-01-103-3291 2019-08-219 1 DIBBS
4820-01-103-3291 2009-09-254 3 DIBBS
4820-01-103-3291 2008-11-309 2 DIBBS

Cross Reference | NSN 4820-01-103-3291

Part Number Cage Code Manufacturer
2621-922-02 ITEM 56-3IN 63686 THE WALWORTH COMPANY
2621-922-02 ITEM 56-3IN 96169 ELECTRIC BOAT CORPORATION
845-1889553 80064 NAVAL SHIP SYSTEMS COMMAND
845-1889553 PIECE 31-3IN 80064 NAVAL SHIP SYSTEMS COMMAND

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Technical Data | NSN 4820-01-103-3291

Characteristic Specifications
STYLE DESIGNATOR B1 THREADED FLANGED
FLANGE DIAMETER 3.719 INCHES NOMINAL
BODY INSIDE DIAMETER 2.875 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT 0.250 INCHES NOMINAL
UNDER FLANGE HEIGHT 0.469 INCHES NOMINAL
MATERIAL NICKEL ALLOY A OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE ANGULAR
SEAT ANGLE IN DEG 15.000 NOMINAL
THREAD SERIES DESIGNATOR UNS SINGLE THREADED PORTION
NOMINAL THREAD SIZE 3.469 INCHES SINGLE THREADED PORTION
THREAD QUANTITY PER INCH 12 SINGLE THREADED PORTION
THREAD CLASS 3A SINGLE THREADED PORTION
THREAD LENGTH 0.469 INCHES NOMINAL SINGLE THREADED PORTION
SPECIAL FEATURES FOUR LUGS 0.250 IN. W,0.125 IN. DEEP EQUALLY SPACED

Restrictions/Controls & Freight Information | NSN 4820-01-103-3291

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 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 4820-01-103-3291

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
1
EA : Each