NSN 4820-01-349-7909 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-349-7909. Manufacturer of record part number: 211055653.
The Stem,fluid Valve, cataloged under National Stock Number 4820-01-349-7909, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-349-7909
Primary Part Number
211055653
Item Name
Stem,fluid Valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Valve Type for Which Designed
BALL
Largest Outside Diameter
1.110 INCHES NOMINAL IN
Stem Actuating End Type
THREADED EXTERNALLY
Valve Size for Which Designed
1.500 INCHES IN
Material
NICKEL ALLOY
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-351-3095DF330644 FIND 112POSSIBLE MATCH
CAM,CONTROL
Possible match (shared part number)Huntington Ingalls Inc Div Newport News Shipbuilding
4820-01-352-9048801-6408784-88POSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Naval Sea Systems Command
4820-01-353-7606211076430POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Naval Sea Systems Command
4820-01-356-3125211055778POSSIBLE MATCH
STOP,MANUAL CONTROL LEVER
Possible match (shared part number)Naval Sea Systems Command
4820-01-358-8889211055645POSSIBLE MATCH
PLATE,RETAINER,VALVE STOP
Possible match (shared part number)Naval Sea Systems Command
4820-01-358-8890211055781POSSIBLE MATCH
STOP,MANUAL CONTROL LEVER
Possible match (shared part number)Naval Sea Systems Command
4820-01-415-0048211075544POSSIBLE MATCH
STOP,VALVE
Possible match (shared part number)Naval Sea Systems Command
4820-01-435-4154POSSIBLE MATCH
VALVE,BALL
Possible match (shared part number)
3120-01-502-1052801-6408784-86POSSIBLE MATCH
BEARING,WASHER,THRUST
Possible match (shared part number)Naval Sea Systems Command
NSN 4820-01-349-7909 is a Stem,fluid Valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-349-7909?
NSN 4820-01-349-7909 has 3 manufacturer part numbers on file: 801-6408784-31 (Naval Sea Systems Command), DF331468 FIND 31 (Huntington Ingalls Inc Div Newport News Shipbuilding), 211055653 (Naval Sea Systems Command).
What NSN replaces 4820-01-349-7909?
9 possible matches (shared part number, not a government interchangeability claim): 3040-01-351-3095, 4820-01-352-9048, 4820-01-353-7606. Verify interchangeability with system specifications before substitution.
What are the specifications of 211055653?
Key specifications for 211055653: Valve Type for Which Designed: BALL; Largest Outside Diameter: 1.110 INCHES NOMINAL IN; Stem Actuating End Type: THREADED EXTERNALLY; Overall Length: 5.290 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-349-7909 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.