The Retainer,disk,valve, cataloged under National Stock Number 4820-01-191-4332, 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1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-191-4332
Item Name
Retainer,disk,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.
8455-01-346-2059POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
3040-01-463-2838A1545POSSIBLE MATCH
WORM SHAFT
Possible match (shared part number)Thern Inc
8455-01-528-9557POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
8455-01-559-4793POSSIBLE MATCH
INSIGNIA,ORGANIZATIONAL
Possible match (shared part number)
8455-01-664-2454POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
A1545
3/9Design control — primary reference
P J Valves Inc
Related Parts
8455-01-346-2059POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
3040-01-463-2838POSSIBLE MATCH
WORM SHAFT
A1545
8455-01-528-9557POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
8455-01-559-4793POSSIBLE MATCH
INSIGNIA,ORGANIZATIONAL
8455-01-664-2454POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Frequently Asked Questions
What is NSN 4820-01-191-4332?
NSN 4820-01-191-4332 is a Retainer,disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-191-4332?
5 possible matches (shared part number, not a government interchangeability claim): 8455-01-346-2059, 3040-01-463-2838, 8455-01-528-9557. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-191-4332?
Key specifications for 4820-01-191-4332: Material: STEEL CORROSION RESISTING. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-191-4332 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.