NSN 4820-01-558-5997 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-558-5997. Manufacturer of record part number: 525-S5XX-05LFK.
The Stem,needle Valve, cataloged under National Stock Number 4820-01-558-5997, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sfc Valve Corporation. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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
Stem,needle Valve
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Sfc Valve Corporation (CAGE 1GZ83)
Technical Specifications
Parameter
Value
NSN
4820-01-558-5997
Primary Part Number
525-S5XX-05LFK
Item Name
Stem,needle Valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Sfc Valve Corporation
Status
ACTIVE
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 Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5330-01-558-6099525-S7XX-65XFKPOSSIBLE MATCH
PACKING,PREFORMED
Possible match (shared part number)Sfc Valve Corporation
5330-01-558-6117525-C7XX-72XFMPOSSIBLE MATCH
GASKET,SPIRAL WOUND
Possible match (shared part number)Sfc Valve Corporation
5330-01-558-6138525-S5XX-65XFKPOSSIBLE MATCH
PACKING,PREFORMED
Possible match (shared part number)Sfc Valve Corporation
5330-01-558-6156525-C5XX-72XFMPOSSIBLE MATCH
GASKET,SPIRAL WOUND
Possible match (shared part number)Sfc Valve Corporation
NSN 4820-01-558-5997 is a Stem,needle Valve, manufactured by Sfc Valve Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-558-5997?
NSN 4820-01-558-5997 has 1 manufacturer part number on file: 525-S5XX-05LFK (Sfc Valve Corporation).
What NSN replaces 4820-01-558-5997?
4 possible matches (shared part number, not a government interchangeability claim): 5330-01-558-6099, 5330-01-558-6117, 5330-01-558-6138. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-558-5997 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.