Product Details | VALVE SEAT

4820-01-534-0842 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: 2642-785-01 ITEM 147, 264278501ITEM147, 4558738, 45587380147, 4558738-0147 , 845-4558738 ITEM 147, 8454558738ITEM147, 4820-01-534-0842, 01-534-0842, 4820015340842, 015340842

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 06 OCT 2005 01-534-0842

Demand History | NSN 4820-01-534-0842

Part Number Request Date QTY Origin
4558738-0147 2025-10-290 293 DIBBS
4558738-0147 2025-10-275 293 DIBBS
4558738-0147 2025-08-233 181 DIBBS
4558738-0147 2025-07-205 181 DIBBS
4558738-0147 2024-10-289 112 DIBBS
4558738-0147 2023-01-17 112 DIBBS
4558738-0147 2023-01-05 112 DIBBS
4820-01-534-0842 2013-06-167 61 DIBBS
4820-01-534-0842 2012-06-167 13 DIBBS
4820-01-534-0842 2011-12-339 10 DIBBS
4820-01-534-0842 2011-07-210 7 DIBBS
4820-01-534-0842 2010-12-349 14 DIBBS
4820-01-534-0842 2010-08-216 14 DIBBS
4820-01-534-0842 2009-05-138 30 DIBBS

Cross Reference | NSN 4820-01-534-0842

Part Number Cage Code Manufacturer
2642-785-01 ITEM 147 96169 ELECTRIC BOAT CORPORATION
4558738 80064 NAVAL SHIP SYSTEMS COMMAND
4558738-0147 96169 ELECTRIC BOAT CORPORATION
845-4558738 ITEM 147 80064 NAVAL SHIP SYSTEMS COMMAND

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Technical Data | NSN 4820-01-534-0842

Characteristic Specifications
MATERIAL PLASTIC SEAT
SPECIAL FEATURES NEXT HIGHER ASSEMBLY; 4820-01-534-0805 BALL VALVE
III END ITEM IDENTIFICATION VIRGINIA CLASS SUB

Restrictions/Controls & Freight Information | NSN 4820-01-534-0842

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
Electro-static Discharge Susceptible:ANo known Electrostatic Discharge (ESD) or Electromagnetic Interference (EMI) sensitivity
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 4820-01-534-0842

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