The Retainer,disk,valve, cataloged under National Stock Number 4820-00-090-9841, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
4820-00-090-9841
Item Name
Retainer,disk,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Outside Diameter
4.745 INCHES NOMINAL IN
Material Document and Classification
MIL-M-16576 MIL SPEC SINGLE MATERIAL RESPONSE
Specification/standard Data
96169-3600-122 MANUFACTURERS SPECIFICATION
Valve Size for Which Designed
3.500 INCHES IN
Inside Diameter
2.172 INCHES NOMINAL IN
Valve Design Control Activity
96169
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 Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-00-090-98423600-122REVBPC6-18-26POSSIBLE MATCH
RETAINER,DISK,VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
5940-01-161-4707360012-2POSSIBLE MATCH
TERMINAL,LUG
Possible match (shared part number)Raytheon Company Dba Raytheon
4820-01-275-51983600-122 GLOBE STOPPOSSIBLE MATCH
VALVE,GLOBE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
5998-01-536-88313600122POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
Possible match (shared part number)Envirovac Inc Dba Monogram Systems-Rockford Div
6730-01-580-843436-00122POSSIBLE MATCH
PROJECTOR,MULTIMEDIA
Possible match (shared part number)Rockwell Collins, Inc. Dba Rc Displays Systems
5330-01-619-6215438-8268662 REV G ITEM 49POSSIBLE MATCH
GASKET
Possible match (shared part number)Naval Sea Systems Command
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
4824-3132365REVBPC5-6-18
3/2Design control — primary reference
U.S. Government activity
3600-122REVBPC5-6-18
3/2Design control — primary reference
U.S. Government activity
3600-122PC5-6-18
5/2Secondary reference
U.S. Government activity
3600-122
D/9Drawing number reference only
U.S. Government activity
Related Parts
4820-00-090-9842POSSIBLE MATCH
RETAINER,DISK,VALVE
3600-122REVBPC6-18-26
5940-01-161-4707POSSIBLE MATCH
TERMINAL,LUG
360012-2
4820-01-275-5198POSSIBLE MATCH
VALVE,GLOBE
3600-122 GLOBE STOP
5998-01-536-8831POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
3600122
6730-01-580-8434POSSIBLE MATCH
PROJECTOR,MULTIMEDIA
36-00122
5330-01-619-6215POSSIBLE MATCH
GASKET
438-8268662 REV G ITEM 49
Frequently Asked Questions
What is NSN 4820-00-090-9841?
NSN 4820-00-090-9841 is a Retainer,disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-00-090-9841?
6 possible matches (shared part number, not a government interchangeability claim): 4820-00-090-9842, 5940-01-161-4707, 4820-01-275-5198. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-00-090-9841?
Key specifications for 4820-00-090-9841: Outside Diameter: 4.745 INCHES NOMINAL IN; Material Document and Classification: MIL-M-16576 MIL SPEC SINGLE MATERIAL RESPONSE; Overall Length: 4.188 INCHES NOMINAL IN; Specification/standard Data: 96169-3600-122 MANUFACTURERS SPECIFICATION. 7 specifications are documented in the U.S. Government catalog.
Is NSN 4820-00-090-9841 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.