The Stem,fluid Valve, cataloged under National Stock Number 4820-01-118-1276, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-118-1276
Item Name
Stem,fluid Valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Largest Outside Diameter
0.565 INCHES NOMINAL IN
Stem Actuating End Type
THREADED EXTERNALLY
Material
COPPER 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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-118-27214775911-0031POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-119-231387791-6101 ITEM22POSSIBLE MATCH
PLATE,RETAINING,SHAFT
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-139-44474775504-0008POSSIBLE MATCH
PLUG,STRAIGHT
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-162-898987794-3301 ITEM 58POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-189-66614775911-0001POSSIBLE MATCH
MANIFOLD,HYDRAULIC SYSTEM ACCESS
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
516-4775911 ITEM 33
3/2Design control — primary reference
U.S. Government activity
516-4775911
D/9Drawing number reference only
U.S. Government activity
Related Parts
4820-01-118-2721POSSIBLE MATCH
STEM,FLUID VALVE
4775911-0031
3040-01-119-2313POSSIBLE MATCH
PLATE,RETAINING,SHAFT
87791-6101 ITEM22
4820-01-139-4447POSSIBLE MATCH
PLUG,STRAIGHT
4775504-0008
4820-01-162-8989POSSIBLE MATCH
STEM,FLUID VALVE
87794-3301 ITEM 58
4730-01-189-6661POSSIBLE MATCH
MANIFOLD,HYDRAULIC SYSTEM ACCESS
4775911-0001
Frequently Asked Questions
What is NSN 4820-01-118-1276?
NSN 4820-01-118-1276 is a Stem,fluid Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-118-1276?
5 possible matches (shared part number, not a government interchangeability claim): 4820-01-118-2721, 3040-01-119-2313, 4820-01-139-4447. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-118-1276?
Key specifications for 4820-01-118-1276: Largest Outside Diameter: 0.565 INCHES NOMINAL IN; Stem Actuating End Type: THREADED EXTERNALLY; Overall Length: 4.082 INCHES NOMINAL IN; Material: COPPER ALLOY. 3 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-118-1276 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.