The Parts Kit,valve, cataloged under National Stock Number 4820-01-509-5449, 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1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-509-5449
Item Name
Parts Kit,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Document Source
90800
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.
4820-01-510-68575863CRS-9SKPOSSIBLE MATCH
PARTS KIT,VALVE
Possible match (shared part number)Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
4820-01-510-72005863CRS-5SKPOSSIBLE MATCH
PARTS KIT,VALVE
Possible match (shared part number)Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
4820-01-510-75145863CRS-10SKPOSSIBLE MATCH
PARTS KIT,VALVE
Possible match (shared part number)Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
4820-01-510-75175863CRS-8SKPOSSIBLE MATCH
PARTS KIT,VALVE
Possible match (shared part number)Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
4820-01-510-98782352-1211CRSPOSSIBLE MATCH
VALVE,CALIBRATED FLOW
Possible match (shared part number)Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
4820-01-510-98832352-1241CRSPOSSIBLE MATCH
VALVE,CALIBRATED FLOW
Possible match (shared part number)Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
10003595 KIT 5863CRS-4SK
5/2Secondary reference
U.S. Government activity
10003595
D/9Drawing number reference only
U.S. Government activity
5863CRS-4SK
3/2Design control — primary reference
U.S. Government activity
Related Parts
4820-01-510-6857POSSIBLE MATCH
PARTS KIT,VALVE
5863CRS-9SK
4820-01-510-7200POSSIBLE MATCH
PARTS KIT,VALVE
5863CRS-5SK
4820-01-510-7514POSSIBLE MATCH
PARTS KIT,VALVE
5863CRS-10SK
4820-01-510-7517POSSIBLE MATCH
PARTS KIT,VALVE
5863CRS-8SK
4820-01-510-9878POSSIBLE MATCH
VALVE,CALIBRATED FLOW
2352-1211CRS
4820-01-510-9883POSSIBLE MATCH
VALVE,CALIBRATED FLOW
2352-1241CRS
Frequently Asked Questions
What is NSN 4820-01-509-5449?
NSN 4820-01-509-5449 is a Parts Kit,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-509-5449?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-510-6857, 4820-01-510-7200, 4820-01-510-7514. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-509-5449?
Key specifications for 4820-01-509-5449: Document Source: 90800; Special Features: PARTS KIT INCLUDES MATCHED ORIFICE PLATES W/DIAPHRAGMS AND O-RINGS FOR SPECIFIC GPM FLOW RATE,DIAPHRAGM RETAINER (84364),O-RINGS (10013631), AND O-RINGS(89050). 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-509-5449 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.