Product Details | VALVE SEAT

4820-00-127-8917 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: 90P9CZ40, 4820-00-127-8917, 00-127-8917, 4820001278917, 001278917

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 04 JAN 1973 00-127-8917

Drawings & Photos | NSN 4820-00-127-8917


Demand History | NSN 4820-00-127-8917

Part Number Request Date QTY Origin
4820-00-127-8917 2025-10-293 32 DIBBS
4820-00-127-8917 2025-10-282 32 DIBBS
4820-00-127-8917 2025-07-209 37 DIBBS
4820-00-127-8917 2025-07-197 37 DIBBS
4820-00-127-8917 2025-04-112 10 DIBBS
4820-00-127-8917 2025-03-86 27 DIBBS
4820-00-127-8917 2025-03-75 27 DIBBS
4820-00-127-8917 2024-09-253 10 DIBBS
4820-00-127-8917 2024-01-11 10 DIBBS
4820-00-127-8917 2023-10-282 10 DIBBS
4820-00-127-8917 2023-06-177 10 DIBBS
90P9CZ40 2022-12-342 6 DIBBS
90P9CZ40 2022-11-318 6 DIBBS
90P9CZ40 2022-03-90 5 DIBBS
90P9CZ40 2022-03-79 2 DIBBS
90P9CZ40 2021-08-243 3 DIBBS
90P9CZ40 2020-10-299 6 DIBBS

Cross Reference | NSN 4820-00-127-8917

Part Number Cage Code Manufacturer
90P9CZ40 77842 EATON CORPORATION DBA CENTURIAN MECHANICAL SEALS

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Technical Data | NSN 4820-00-127-8917

Characteristic Specifications
STYLE DESIGNATOR B6 PLAIN
OVERALL HEIGHT 0.203 INCHES NOMINAL
BODY OUTSIDE DIAMETER 2.906 INCHES NOMINAL
BODY INSIDE DIAMETER 2.500 INCHES NOMINAL
MATERIAL VITON B OVERALL
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE FLAT

Restrictions/Controls & Freight Information | NSN 4820-00-127-8917

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:QStrategic List Item (SLI). Demilitarization not required. SLI are non-MLI(Munitions List Items) controlled by the U.S. Dept. of Commerce through the Export Administration Regulations (EAR) and indicated on the Commerce Control List (CCL). Each CCL entry is preceded by a four-digit Export Control Commerce Control List Item (CCLI) – MUT to the point of scrap required outside the United States. Inside the United States, MUT is required when the DEMIL integrity code (IC) is “3” and MUT is not required when the DEMIL IC is “6.”
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 AX Defense Supply Center Columbus
Columbus, OH 43216-5000
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 4820-00-127-8917

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 CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each