The Disk,valve, cataloged under National Stock Number 4820-00-573-9580, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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
Disk,valve
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Technical Specifications
Parameter
Value
NSN
4820-00-573-9580
Item Name
Disk,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL B — Remove Demilitarization Key Points
Hazard
No hazard code in the DLA record (HMIC N)
⇄Related Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5950-00-688-6808SMD453142POSSIBLE MATCH
TRANSFORMER,AUDIO FREQUENCY
Possible match (shared part number)Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5330-01-027-2794POSSIBLE MATCH
SEAL
Possible match (shared part number)
5307-01-325-590625306POSSIBLE MATCH
STUD,PLAIN
Possible match (shared part number)Liquid Metronics Inc
5935-01-424-72283174AS4071POSSIBLE MATCH
CONNECTOR,RECEPTACLE,ELECTRICAL
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
25306
3/2Design control — primary reference
U.S. Government activity
Related Parts
5950-00-688-6808POSSIBLE MATCH
TRANSFORMER,AUDIO FREQUENCY
SMD453142
5330-01-027-2794POSSIBLE MATCH
SEAL
5307-01-325-5906POSSIBLE MATCH
STUD,PLAIN
25306
5935-01-424-7228POSSIBLE MATCH
CONNECTOR,RECEPTACLE,ELECTRICAL
3174AS4071
Frequently Asked Questions
What is NSN 4820-00-573-9580?
NSN 4820-00-573-9580 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-00-573-9580?
4 possible matches (shared part number, not a government interchangeability claim): 5950-00-688-6808, 5330-01-027-2794, 5307-01-325-5906. Verify interchangeability with system specifications before substitution.
Is NSN 4820-00-573-9580 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.
What is the DEMIL code for NSN 4820-00-573-9580?
NSN 4820-00-573-9580 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.