Product Details | VALVE SEAT

4820-00-393-2654 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: 35338, 4820-00-393-2654, 00-393-2654, 4820003932654, 003932654

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 05 APR 1974 00-393-2654

Drawings & Photos | NSN 4820-00-393-2654


Cross Reference | NSN 4820-00-393-2654

Part Number Cage Code Manufacturer
35338 0UES3 MID-AMERICA AVIATION, INC.
35338 19156 MOOG INC.
35338 79294 E-SYSTEMS INC MONTEK DIV
35338 94697 MOOG, INC.

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Technical Data | NSN 4820-00-393-2654

Characteristic Specifications
STYLE DESIGNATOR B8 PLAIN FLANGED
FLANGE DIAMETER 0.357 INCHES MINIMUM AND 0.358 INCHES MAXIMUM
BODY OUTSIDE DIAMETER 0.247 INCHES NOMINAL
BODY INSIDE DIAMETER 0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT 0.052 INCHES NOMINAL
UNDER FLANGE HEIGHT 0.202 INCHES NOMINAL
MATERIAL STEEL OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
HARDNESS RATING 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
SEATING SURFACE SHAPE FLAT
SEAT ANGLE IN DEG 30.000 NOMINAL
III FSC APPLICATION DATA VALVE,LINEAR DIRECTIONAL CONTROL,HYDRAULIC SYSTEM,ACFT
MANUFACTURERS CODE 19156
DESIGN CONTROL REFERENCE 35338

Restrictions/Controls & Freight Information | NSN 4820-00-393-2654

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: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.
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 KE Naval ICP
Philadelphia, PA 19111
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 4820-00-393-2654

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
EA : Each