Product Details | VALVE SEAT

4820-00-586-3920 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: C89439EPCALLNICU, C8943-9EPCALLNICU, 4820-00-586-3920, 00-586-3920, 4820005863920, 005863920

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1963 00-586-3920

Drawings & Photos | NSN 4820-00-586-3920


Cross Reference | NSN 4820-00-586-3920

Part Number Cage Code Manufacturer
C8943-9EPCALLNICU 63686 THE WALWORTH COMPANY

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Technical Data | NSN 4820-00-586-3920

Characteristic Specifications
STYLE DESIGNATOR B1 THREADED FLANGED
FLANGE DIAMETER 0.934 INCHES MINIMUM AND 0.940 INCHES MAXIMUM
BODY INSIDE DIAMETER 0.422 INCHES MINIMUM AND 0.426 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT 0.119 INCHES MINIMUM AND 0.125 INCHES MAXIMUM
UNDER FLANGE HEIGHT 0.316 INCHES NOMINAL
MATERIAL COPPER ALLOY OVERALL
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE ANGULAR
SEAT ANGLE IN DEG 15.000 NOMINAL
TAPER MINOR DIAMETER 0.469 INCHES MINIMUM AND 0.473 INCHES MAXIMUM
TAPER MAJOR DIAMETER 0.547 INCHES MINIMUM AND 0.551 INCHES MAXIMUM
TAPER LENGTH ANY ACCEPTABLE
THREAD SERIES DESIGNATOR UNS SINGLE THREADED PORTION
NOMINAL THREAD SIZE 0.766 INCHES SINGLE THREADED PORTION
THREAD QUANTITY PER INCH 24 SINGLE THREADED PORTION
THREAD CLASS 2A SINGLE THREADED PORTION
(NON-CORE DATA) THREAD PITCH DIAMETERS IN INCHES 0.7350 TO 0.7390 SINGLE THREADED PORTION
THREAD LENGTH 0.316 INCHES NOMINAL SINGLE THREADED PORTION
SPECIAL FEATURES 1 SEAT RING

Restrictions/Controls & Freight Information | NSN 4820-00-586-3920

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 4820-00-586-3920

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 CodesXSEMIACTIVE ITEM-NO REPLACEMENT (NON-STOCKED ITEMS) A potentially inactive NSN which must be retained in the supply system as an item of supply because (1) stocks of the item are on hand or in use below the wholesale level and (2) the NSN is cited in equipment authorization documents TO & E, TA, TM, etc., or in-use assets are being reported. 1. Items are authorized for central procurement but not authorized for stockage at wholesale level. 2. Requisitions for in-use replacement will be authorized in accordance with individual Military Service directives. 3. Requisitions may be submitted as requirements generate. Repetitive demands may dictate an AAC change to permit wholesale stockage.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each