Product Details | VALVE SEAT

4820-01-048-3346 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: 8034384536, 803-4384536, 80343845362XX85, 803-4384536-2XX-85, 803438453682XX13, 803-4384536-82XX-13, 4820-01-048-3346, 01-048-3346, 4820010483346, 010483346

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 23 SEP 1977 01-048-3346

Drawings & Photos | NSN 4820-01-048-3346


Demand History | NSN 4820-01-048-3346

Part Number Request Date QTY Origin
4820-01-048-3346 2025-11-307 13 DIBBS
4820-01-048-3346 2025-10-296 13 DIBBS
8034384536 2024-09-265 5 KR
4820-01-048-3346 2015-11-312 30 DIBBS
4820-01-048-3346 2015-10-292 24 DIBBS
4820-01-048-3346 2015-10-279 24 DIBBS

Cross Reference | NSN 4820-01-048-3346

Part Number Cage Code Manufacturer
803-4384536 80064 NAVAL SHIP SYSTEMS COMMAND
803-4384536-2XX-85 80064 NAVAL SHIP SYSTEMS COMMAND
803-4384536-82XX-13 80064 NAVAL SHIP SYSTEMS COMMAND

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Technical Data | NSN 4820-01-048-3346

Characteristic Specifications
STYLE DESIGNATOR B5 PLAIN THREADED
OVERALL HEIGHT 0.500 INCHES NOMINAL
BODY INSIDE DIAMETER 2.062 INCHES NOMINAL
MATERIAL NICKEL ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-N-288 FED SPEC ALL MATERIAL RESPONSES OVERALL
HARDNESS RATING NOT RATED
SEATING SURFACE SHAPE ANGULAR
SEAT ANGLE IN DEG 45.000 NOMINAL
THREAD SERIES DESIGNATOR UNS SINGLE THREADED PORTION
NOMINAL THREAD SIZE 2.625 INCHES SINGLE THREADED PORTION
THREAD QUANTITY PER INCH 18 SINGLE THREADED PORTION
THREAD CLASS 3A SINGLE THREADED PORTION
THREAD LENGTH 0.375 INCHES NOMINAL SINGLE THREADED PORTION
SPECIAL FEATURES ID HAS OCTAGONAL WRENCHING FEATURE 1.893 IN. ACROSS FLATS

Restrictions/Controls & Freight Information | NSN 4820-01-048-3346

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 4820-01-048-3346

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