The Stem,valve, cataloged under National Stock Number 4820-01-084-8676, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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.
Catalog Facts
Item Name
Stem,valve
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Technical Specifications
Parameter
Value
NSN
4820-01-084-8676
Item Name
Stem,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
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.
5340-01-108-86584384539-0193POSSIBLE MATCH
CRANK,HAND
Possible match (shared part number)Naval Ship Systems Command
4810-01-120-0503803-4384539-034POSSIBLE MATCH
RETAINER,PAD
Possible match (shared part number)Naval Ship Systems Command
4810-01-139-4446803-4384539 PIECE 20.21POSSIBLE MATCH
ROD,CONNECTING,VALVE ACTUATOR
Possible match (shared part number)Naval Ship Systems Command
5310-01-178-6637803-4384539-X-031POSSIBLE MATCH
NUT,DISK,VALVE
Possible match (shared part number)Naval Ship Systems Command
4820-01-211-5341803-4384539 PIECE 123POSSIBLE MATCH
ARM,VALVE
Possible match (shared part number)Naval Ship Systems Command
4820-01-281-5945803-4384539 PIECE 20,26POSSIBLE MATCH
CONNECTING ROD AND BEARING ASSEM
Possible match (shared part number)Naval Ship Systems Command
4820-01-281-5947803-4384539-201POSSIBLE MATCH
TEST FIXTURE,VALVE
Possible match (shared part number)Naval Ship Systems Command
4820-01-281-5948803-4384539 PIECE 207-224POSSIBLE MATCH
BALL HANDLING TOOL CASE ASSEMBLY
Possible match (shared part number)Naval Ship Systems Command
3010-01-292-571276553-78X14 PIECE 4AND5POSSIBLE MATCH
COUPLING,SHAFT,RIGID
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
810-4384539 PIECE 112
5/9Secondary reference
U.S. Government activity
803-4384539 PIECE 112
3/2Design control — primary reference
U.S. Government activity
803-4384539
D/9Drawing number reference only
U.S. Government activity
Related Parts
5340-01-108-8658POSSIBLE MATCH
CRANK,HAND
4384539-0193
4810-01-120-0503POSSIBLE MATCH
RETAINER,PAD
803-4384539-034
4810-01-139-4446POSSIBLE MATCH
ROD,CONNECTING,VALVE ACTUATOR
803-4384539 PIECE 20.21
5310-01-178-6637POSSIBLE MATCH
NUT,DISK,VALVE
803-4384539-X-031
4820-01-211-5341POSSIBLE MATCH
ARM,VALVE
803-4384539 PIECE 123
4820-01-281-5945POSSIBLE MATCH
CONNECTING ROD AND BEARING ASSEM
803-4384539 PIECE 20,26
4820-01-281-5947POSSIBLE MATCH
TEST FIXTURE,VALVE
803-4384539-201
4820-01-281-5948POSSIBLE MATCH
BALL HANDLING TOOL CASE ASSEMBLY
803-4384539 PIECE 207-224
3010-01-292-5712POSSIBLE MATCH
COUPLING,SHAFT,RIGID
76553-78X14 PIECE 4AND5
Frequently Asked Questions
What is NSN 4820-01-084-8676?
NSN 4820-01-084-8676 is a Stem,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-084-8676?
9 possible matches (shared part number, not a government interchangeability claim): 5340-01-108-8658, 4810-01-120-0503, 4810-01-139-4446. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-084-8676 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.