The Stem,fluid Valve, cataloged under National Stock Number 4820-01-116-6520, 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1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-116-6520
Item Name
Stem,fluid Valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Material
STEEL CORROSION RESISTING
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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-440-6541800 38R-1/16 RED. ORIFICEPOSSIBLE MATCH
TRAP,STEAM
Possible match (shared part number)Armstrong International Inc Dba Armstrong Machine Works
4730-01-440-6859800 38R-1/16 BUCKETPOSSIBLE MATCH
BUCKET,STEAM TRAP
Possible match (shared part number)Armstrong International Inc Dba Armstrong Machine Works
4730-01-440-6869800 38R-1/16 PRESS.CHANGE ASSY.POSSIBLE MATCH
ASSY,PRESS CHANGE
Possible match (shared part number)Armstrong International Inc Dba Armstrong Machine Works
4730-01-440-6879800 38R-1/16 THIMBLEPOSSIBLE MATCH
THIMBLE
Possible match (shared part number)Armstrong International Inc Dba Armstrong Machine Works
4730-01-440-688780038R-1/16 INLET TUBEPOSSIBLE MATCH
TUBE,INLET
Possible match (shared part number)Armstrong International Inc Dba Armstrong Machine Works
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
46333 ITEM NO 6
5/2Secondary reference
U.S. Government activity
C3127C
3/2Design control — primary reference
U.S. Government activity
C3127
5/9Secondary reference
U.S. Government activity
Related Parts
4730-01-440-6541POSSIBLE MATCH
TRAP,STEAM
800 38R-1/16 RED. ORIFICE
4730-01-440-6859POSSIBLE MATCH
BUCKET,STEAM TRAP
800 38R-1/16 BUCKET
4730-01-440-6869POSSIBLE MATCH
ASSY,PRESS CHANGE
800 38R-1/16 PRESS.CHANGE ASSY.
4730-01-440-6879POSSIBLE MATCH
THIMBLE
800 38R-1/16 THIMBLE
4730-01-440-6887POSSIBLE MATCH
TUBE,INLET
80038R-1/16 INLET TUBE
Frequently Asked Questions
What is NSN 4820-01-116-6520?
NSN 4820-01-116-6520 is a Stem,fluid Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-116-6520?
5 possible matches (shared part number, not a government interchangeability claim): 4730-01-440-6541, 4730-01-440-6859, 4730-01-440-6869. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-116-6520?
Key specifications for 4820-01-116-6520: Overall Length: 1.847 INCHES NOMINAL IN; Material: STEEL CORROSION RESISTING. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-116-6520 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.