Product Details | VALVE SEAT

4820-00-739-6641 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: B34470PC2, 15600409, 156004-09, 4820-00-739-6641, 00-739-6641, 4820007396641, 007396641

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1961 00-739-6641

Drawings & Photos | NSN 4820-00-739-6641


Cross Reference | NSN 4820-00-739-6641

Part Number Cage Code Manufacturer
156004-09 77842 EATON CORPORATION DBA CENTURIAN MECHANICAL SEALS
B34470PC2 77842 EATON CORPORATION DBA CENTURIAN MECHANICAL SEALS

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Technical Data | NSN 4820-00-739-6641

Characteristic Specifications
STYLE DESIGNATOR B3 DOUBLE THREAD
OVERALL HEIGHT 1.750 INCHES NOMINAL
BODY INSIDE DIAMETER 0.312 INCHES NOMINAL
MATERIAL STEEL CORROSION RESISTING OVERALL
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE FLAT
THREAD SERIES DESIGNATOR UNF FIRST THREADED PORTION UN SECOND THREADED PORTION
NOMINAL THREAD SIZE 0.872 INCHES FIRST THREADED PORTION 1.188 INCHES SECOND THREADED PORTION
THREAD QUANTITY PER INCH 12 SECOND THREADED PORTION
THREAD CLASS 2A FIRST THREADED PORTION 2A SECOND THREADED PORTION
THREAD LENGTH 0.375 INCHES NOMINAL FIRST THREADED PORTION 0.625 INCHES NOMINAL SECOND THREADED PORTION
SPECIAL FEATURES W/GASKET

Restrictions/Controls & Freight Information | NSN 4820-00-739-6641

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 XX
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 4820-00-739-6641

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 CodesJNOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
AY : Assembly