Product Details | VALVE SEAT

4820-00-346-6529 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: H48203466529, H4820-346-6529, R55749090APC16, R557-49090APC16, R55749120APC16, R557-49120APC16, R55749330APC16, R557-49330APC16, R55749340CPC16, R557-49340CPC16, 8037A06B, 4820-00-346-6529, 00-346-6529, 4820003466529, 003466529

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1963 00-346-6529

Drawings & Photos | NSN 4820-00-346-6529


Cross Reference | NSN 4820-00-346-6529

Part Number Cage Code Manufacturer
8037A06B 38056 ASHCROFT INC.
H4820-346-6529 03950 NAVAL INVENTORY CONTROL POINT MECHANICSBURG
R557-49090APC16 38056 ASHCROFT INC.
R557-49120APC16 38056 ASHCROFT INC.
R557-49330APC16 38056 ASHCROFT INC.
R557-49340CPC16 38056 ASHCROFT INC.

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Technical Data | NSN 4820-00-346-6529

Characteristic Specifications
STYLE DESIGNATOR B1A THREADED FLANGED
FLANGE DIAMETER 2.188 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT 0.438 INCHES NOMINAL
UNDER FLANGE HEIGHT 0.438 INCHES NOMINAL
BODY STEPPED INSIDE DIAMETER 1.695 INCHES MINIMUM AND 1.697 INCHES MAXIMUM FIRST STEP 1.558 INCHES MINIMUM AND 1.568 INCHES MAXIMUM SECOND STEP 1.436 INCHES MINIMUM AND 1.440 INCHES MAXIMUM THIRD STEP
MATERIAL COBALT ALLOY OVERALL
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE FLAT
THREAD SERIES DESIGNATOR UN SINGLE THREADED PORTION
NOMINAL THREAD SIZE 2.000 INCHES SINGLE THREADED PORTION
THREAD QUANTITY PER INCH 16 SINGLE THREADED PORTION
THREAD CLASS 2A SINGLE THREADED PORTION
THREAD LENGTH 0.438 INCHES NOMINAL SINGLE THREADED PORTION

Restrictions/Controls & Freight Information | NSN 4820-00-346-6529

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 4820-00-346-6529

Category Code Description
Cognizance Codes9CNavy-owned stocks of defense construction material
Naval Inventory Control Point, Mechanicsburg
Source of SupplyS9CDefense Supply Center Columbus
Columbus, OH 43215
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