NSN 4820-01-356-3125 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-356-3125. Manufacturer of record part number: 211055778.
Nearby stock numbers← 4820-01-356-2712 Valve, Linear, Directional Control
·
4820-01-356-3343 Valve, Relief, Pressure and Temper →
4820-01-356-3125 — Valves, Nonpowered
Features
Stop,manual Control Lever — FSC 4820
General Characteristics Item Description: NICKEL COPPER ALLOY;3.490 IN. O/A LG IN
3 manufacturer part numbers on file
Manufacturer of record: Naval Sea Systems Command
Identification
NSN: 4820-01-356-3125
NIIN: 013563125
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 211055778
Manufacturer: Naval Sea Systems Command
General Description
The Stop,manual Control Lever, cataloged under National Stock Number 4820-01-356-3125, 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 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-356-3125
Primary Part Number
211055778
Item Name
Stop,manual Control Lever
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
General Characteristics Item Description
NICKEL COPPER ALLOY;3.490 IN. O/A LG IN
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 Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
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
4820-01-377-3873211068742POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Naval Sea Systems Command
4820-01-377-3890211055673POSSIBLE MATCH
SEAT,VALVE
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
4820-01-415-8288801-6408784-AY81POSSIBLE MATCH
VALVE,BALL
Possible match (shared part number)Naval Sea Systems Command
4820-01-415-8290801-6408784-AY78POSSIBLE MATCH
VALVE,BALL
Possible match (shared part number)Naval Sea Systems Command
Huntington Ingalls Inc Div Newport News Shipbuilding
801-6408784
D/9Drawing number reference only
Naval Sea Systems Command
Related Parts
4820-01-358-8889POSSIBLE MATCH
PLATE,RETAINER,VALVE STOP
211055645
4820-01-358-8890POSSIBLE MATCH
STOP,MANUAL CONTROL LEVER
211055781
4820-01-377-3873POSSIBLE MATCH
STEM,FLUID VALVE
211068742
4820-01-377-3890POSSIBLE MATCH
SEAT,VALVE
211055673
4820-01-415-0048POSSIBLE MATCH
STOP,VALVE
211075544
4820-01-415-8288POSSIBLE MATCH
VALVE,BALL
801-6408784-AY81
4820-01-415-8290POSSIBLE MATCH
VALVE,BALL
801-6408784-AY78
Frequently Asked Questions
What is NSN 4820-01-356-3125?
NSN 4820-01-356-3125 is a Stop,manual Control Lever, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-356-3125?
NSN 4820-01-356-3125 has 3 manufacturer part numbers on file: DF330644 FIND 179 (Huntington Ingalls Inc Div Newport News Shipbuilding), 801-6408784 FIND 170 (Naval Sea Systems Command), 211055778 (Naval Sea Systems Command).
What NSN replaces 4820-01-356-3125?
7 possible matches (shared part number, not a government interchangeability claim): 4820-01-358-8889, 4820-01-358-8890, 4820-01-377-3873. Verify interchangeability with system specifications before substitution.
What are the specifications of 211055778?
Key specifications for 211055778: General Characteristics Item Description: NICKEL COPPER ALLOY;3.490 IN. O/A LG IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-356-3125 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.