Product Details | VALVE SEAT

4820-00-973-3777 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: NL6671, NL667-1, NP417PC30, 4820-00-973-3777, 00-973-3777, 4820009733777, 009733777

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 30 SEP 1966 00-973-3777

Drawings & Photos | NSN 4820-00-973-3777


Cross Reference | NSN 4820-00-973-3777

Part Number Cage Code Manufacturer
NL667-1 93591 TYCO VALVES & CONTROLS LP Use CAGE Code 04613 for Cataloging.
NP417PC30 93591 TYCO VALVES & CONTROLS LP Use CAGE Code 04613 for Cataloging.

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Technical Data | NSN 4820-00-973-3777

Characteristic Specifications
STYLE DESIGNATOR B7 PLAIN FLANGED
FLANGE DIAMETER 2.745 INCHES MINIMUM AND 2.746 INCHES MAXIMUM
BODY OUTSIDE DIAMETER 2.502 INCHES NOMINAL
BODY INSIDE DIAMETER 1.562 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT 0.562 INCHES NOMINAL
UNDER FLANGE HEIGHT 0.936 INCHES NOMINAL
MATERIAL STEEL BODY COBALT ALLOY FACE
MATERIAL DOCUMENT AND CLASSIFICATION ASTM A182,GRADE F21 ASSN STD SINGLE MATERIAL RESPONSE BODY MIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FACE
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE RADIAL
SEAT RADIUS ANY ACCEPTABLE
TAPER MINOR DIAMETER 1.562 INCHES NOMINAL
TAPER LENGTH 0.812 INCHES NOMINAL
SEAL ACCOMMODATION TYPE GROOVED

Restrictions/Controls & Freight Information | NSN 4820-00-973-3777

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 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 4820-00-973-3777

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