Product Details | VALVE SEAT

4820-01-063-1856 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: 8031385637, 803-1385637, 4820-01-063-1856, 01-063-1856, 4820010631856, 010631856

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 29 JUL 1978 01-063-1856

Drawings & Photos | NSN 4820-01-063-1856


Demand History | NSN 4820-01-063-1856

Part Number Request Date QTY Origin
4820-01-063-1856 2024-07-212 15 DIBBS
4820-01-063-1856 2024-07-199 15 DIBBS
4820-01-063-1856 2022-10-293 5 DIBBS
4820-01-063-1856 2019-09-265 15 DIBBS
4820-01-063-1856 2019-03-68 14 DIBBS
4820-01-063-1856 2016-04-112 6 DIBBS
4820-01-063-1856 2016-04-101 6 DIBBS

Cross Reference | NSN 4820-01-063-1856

Part Number Cage Code Manufacturer
803-1385637 80064 NAVAL SHIP SYSTEMS COMMAND

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Technical Data | NSN 4820-01-063-1856

Characteristic Specifications
STYLE DESIGNATOR B1 THREADED FLANGED
FLANGE DIAMETER 9.125 INCHES NOMINAL
BODY INSIDE DIAMETER 7.937 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT 0.343 INCHES NOMINAL
UNDER FLANGE HEIGHT 0.750 INCHES NOMINAL
MATERIAL NICKEL ALLOY OVERALL
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE FLAT
THREAD SERIES DESIGNATOR UNF SINGLE THREADED PORTION
NOMINAL THREAD SIZE 8.687 INCHES SINGLE THREADED PORTION
THREAD CLASS 2A SINGLE THREADED PORTION
THREAD LENGTH 1.093 INCHES NOMINAL SINGLE THREADED PORTION

Restrictions/Controls & Freight Information | NSN 4820-01-063-1856

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:UPrecious metal type is unknown
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 576 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 B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
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 4820-01-063-1856

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