Product Details | VALVE SEAT

4820-00-993-5890 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: 101B209RA, 4820-00-993-5890, 00-993-5890, 4820009935890, 009935890

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 28 MAR 1967 00-993-5890

Cross Reference | NSN 4820-00-993-5890

Part Number Cage Code Manufacturer
101B209RA 03502 GENERAL ELECTRIC CO NAVAL AND DRIVE TURBINE SYSTEMS DEPT
101B209RA 24446 GENERAL ELECTRIC CO

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Technical Data | NSN 4820-00-993-5890

Characteristic Specifications
FLANGE DIAMETER 2.281 INCHES NOMINAL
BODY OUTSIDE DIAMETER 1.936 INCHES MINIMUM AND 1.937 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT 0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM
UNDER FLANGE HEIGHT 0.750 INCHES NOMINAL
MATERIAL STEEL BODY COBALT ALLOY SEAT
MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-18410 CLASS B,COND A MIL SPEC SINGLE MATERIAL RESPONSE BODY MIL-R-17131,TYPE-MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE ANGULAR
SEAT ANGLE IN DEG 20.000 NOMINAL
TAPER MINOR DIAMETER 1.250 INCHES NOMINAL
TAPER MAJOR DIAMETER 1.562 INCHES NOMINAL
TAPER LENGTH 0.428 INCHES NOMINAL
III FSC APPLICATION DATA STEAM TURBINE,ELECTRIC GENERATION
MANUFACTURERS CODE 03502
DESIGN CONTROL REFERENCE 101B209RA

Restrictions/Controls & Freight Information | NSN 4820-00-993-5890

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.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
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 HD Naval Inventory Control Point
Mechanicsburg, PA 17055-0788
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 4820-00-993-5890

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