The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-902-0539, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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.
Catalog Facts
Item Name
Valve,regulating,fluid Pressure
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Technical Specifications
Parameter
Value
NSN
4820-00-902-0539
Item Name
Valve,regulating,fluid Pressure
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)
⇄Related Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5950-00-913-1965POSSIBLE MATCH
COIL,RADIO FREQUENCY
Possible match (shared part number)
3120-00-949-4975144EX98POSSIBLE MATCH
BEARING,WASHER,THRUST
Possible match (shared part number)Oshkosh Defense Llc
6505-01-355-0154POSSIBLE MATCH
VINBLASTINE SULFATE
Possible match (shared part number)
6625-01-540-161027810POSSIBLE MATCH
ANALYZER,SPECTRUM
Possible match (shared part number)Nova Biomedical Corp
6515-01-641-077427810POSSIBLE MATCH
APPLICATOR,LASER
Possible match (shared part number)Djo Llc
5120-01-644-209727810POSSIBLE MATCH
HAMMER,HAND
Possible match (shared part number)Nupla Corporation
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
27810
3/2Design control — primary reference
U.S. Government activity
697376-1
1/2Source control — Government-approved source
U.S. Government activity
Related Parts
5950-00-913-1965POSSIBLE MATCH
COIL,RADIO FREQUENCY
3120-00-949-4975POSSIBLE MATCH
BEARING,WASHER,THRUST
144EX98
6505-01-355-0154POSSIBLE MATCH
VINBLASTINE SULFATE
6625-01-540-1610POSSIBLE MATCH
ANALYZER,SPECTRUM
27810
6515-01-641-0774POSSIBLE MATCH
APPLICATOR,LASER
27810
5120-01-644-2097POSSIBLE MATCH
HAMMER,HAND
27810
Frequently Asked Questions
What is NSN 4820-00-902-0539?
NSN 4820-00-902-0539 is a Valve,regulating,fluid Pressure, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-00-902-0539?
6 possible matches (shared part number, not a government interchangeability claim): 5950-00-913-1965, 3120-00-949-4975, 6505-01-355-0154. Verify interchangeability with system specifications before substitution.
Is NSN 4820-00-902-0539 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.