Product Details | VALVE SEAT

4820-01-287-4874 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: 2110254 PC 20, 2110254 PIECE 20 1/4 IN, 2110254PC20, 2110254PIECE2014IN, 2620-902X10 PC 20 1/4IN, 2620902X10PC2014IN, 8032177934X1XX18, 803-2177934-X1XX-18, 4820-01-287-4874, 01-287-4874, 4820012874874, 012874874

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 22 OCT 1988 01-287-4874

Drawings & Photos | NSN 4820-01-287-4874


Cross Reference | NSN 4820-01-287-4874

Part Number Cage Code Manufacturer
2110254 PC 20 80064 NAVAL SHIP SYSTEMS COMMAND
2110254 PIECE 20 1/4 IN 80064 NAVAL SHIP SYSTEMS COMMAND
2620-902X10 PC 20 1/4IN 96169 ELECTRIC BOAT CORPORATION
803-2177934-X1XX-18 80064 NAVAL SHIP SYSTEMS COMMAND

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Technical Data | NSN 4820-01-287-4874

Characteristic Specifications
STYLE DESIGNATOR B1 THREADED FLANGED
FLANGE DIAMETER 0.930 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT 0.122 INCHES NOMINAL
MATERIAL NICKEL ALLOY OVERALL
SEATING SURFACE SHAPE ANGULAR
THREAD SERIES DESIGNATOR UNS SINGLE THREADED PORTION
NOMINAL THREAD SIZE 0.7656 INCHES SINGLE THREADED PORTION
THREAD QUANTITY PER INCH 24 SINGLE THREADED PORTION
THREAD CLASS 3A SINGLE THREADED PORTION
III END ITEM IDENTIFICATION VALVE, GLOBE .25IN; VALVE ANL .25IPS 700PSI SWLDG COPNI; VALVE GLB .25IPS 700PSI SB CNA; VALVE ANL .25IPS 700PSI SB BRZ; VALVE ANL .25IPS 700PSI SB COP NI; VALVE ANL .25IPS 700PSI SWLDG CNA

Restrictions/Controls & Freight Information | NSN 4820-01-287-4874

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:SThe item is a non-aviation Critical Safety Item (CSI) whose failure will result in serious damage to equipment or serious injury or death to personnel.
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 593 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 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 4820-01-287-4874

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