Product Details | VALVE SEAT

4820-00-250-4764 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: SS8452180761PC11, SS845-2180761PC11, SS8452180761PC11CP, SS845-2180761PC11CP, 2640674X1PC11, 2640-674X1PC11, 2640674X1PC11CP, 2640-674X1PC11CP, 4820-00-250-4764, 00-250-4764, 4820002504764, 002504764

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 19 NOV 1969 00-250-4764

Drawings & Photos | NSN 4820-00-250-4764


Cross Reference | NSN 4820-00-250-4764

Part Number Cage Code Manufacturer
2640-674X1PC11 96169 ELECTRIC BOAT CORPORATION
2640-674X1PC11CP 03950 NAVAL INVENTORY CONTROL POINT MECHANICSBURG
SS845-2180761PC11 80064 NAVAL SHIP SYSTEMS COMMAND
SS845-2180761PC11CP 03950 NAVAL INVENTORY CONTROL POINT MECHANICSBURG

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Technical Data | NSN 4820-00-250-4764

Characteristic Specifications
STYLE DESIGNATOR B11 PLAIN
OVERALL HEIGHT 0.250 INCHES NOMINAL
BODY OUTSIDE DIAMETER 1.059 INCHES MINIMUM
BODY INSIDE DIAMETER 0.5625 INCHES NOMINAL
MATERIAL PLASTIC OVERALL
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE O-RING
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS CLEANED IN ACCORDANCE WITH MIL-P-52211
CRITICALITY CODE JUSTIFICATION ZZZY
MANUFACTURERS CODE 96169
DESIGN CONTROL REFERENCE 2640-674X1PC11

Restrictions/Controls & Freight Information | NSN 4820-00-250-4764

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:YThe item does not have a nuclear hardened feature but does have other critical feature(s) 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 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 4820-00-250-4764

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 CodesVTERMINAL ITEM # Identifies items in stock, but future procurement is not authorized. Requisitions may continue to be submitted until stocks are exhausted. Preferred item National Stock Number is normally provided by application of the phrase: When Exhausted Use (NSN). Requisitions will be submitted in accordance with IMM/Service requisitioning procedures as applicable.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each