Reference Number Differentiating Characteristics: SELECTED,TESTED AND CERTIFIED FOR TRIDENT SUBMARINE APPLICATION
Identification
NSN: 4820-01-062-4551
NIIN: 010624551
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
General Description
The Valve Assembly, cataloged under National Stock Number 4820-01-062-4551, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-062-4551
Item Name
Valve Assembly
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Reference Number Differentiating Characteristics
SELECTED,TESTED AND CERTIFIED FOR TRIDENT SUBMARINE APPLICATION
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL Q — CCL Item — Commerce Control List
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
S
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5340-01-139-158220476-1000POSSIBLE MATCH
SEAT,HELICAL COMPRESSION SPRING
Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
3040-01-153-147220476-1040POSSIBLE MATCH
SHAFT,VALVE
Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
3040-01-154-125520475-1000POSSIBLE MATCH
SHAFT,PISTON,OVERRIDE
Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-154-640020476-1050 PIECE 19POSSIBLE MATCH
PISTON SHAFT VALVE
Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4810-01-176-9559POSSIBLE MATCH
SLIDE,SLEEVE,MATCHED SET
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
NSN 4820-01-062-4551 is a Valve Assembly, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-062-4551?
5 possible matches (shared part number, not a government interchangeability claim): 5340-01-139-1582, 3040-01-153-1472, 3040-01-154-1255. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-062-4551?
Key specifications for 4820-01-062-4551: Reference Number Differentiating Characteristics: SELECTED,TESTED AND CERTIFIED FOR TRIDENT SUBMARINE APPLICATION. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-062-4551 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.
What is the DEMIL code for NSN 4820-01-062-4551?
NSN 4820-01-062-4551 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.