The Guide,valve Stem, cataloged under National Stock Number 4820-01-489-5958, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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.
Catalog Facts
Item Name
Guide,valve Stem
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Technical Specifications
Parameter
Value
NSN
4820-01-489-5958
Item Name
Guide,valve Stem
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL Q — CCL Item — Commerce Control List
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.
4820-01-489-59782-20677-019POSSIBLE MATCH
BALL,VALVE,PORTED
Possible match (shared part number)Circor Aerospace, Inc. Dba Circor Aerospace Inc
5340-01-490-25562-12122-001POSSIBLE MATCH
HANDLE,MANUAL CONTROL
Possible match (shared part number)Circor Aerospace, Inc. Dba Circor Aerospace Inc
3120-01-494-31341-19582-097POSSIBLE MATCH
BEARING,WASHER,THRUST
Possible match (shared part number)Circor Aerospace, Inc. Dba Circor Aerospace Inc
5305-01-644-220350420-086POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Circor Aerospace, Inc. Dba Circor Aerospace Inc
5305-01-644-234050527-202POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Circor Aerospace, Inc. Dba Circor Aerospace Inc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
3-80114 ITEM 8
5/2Secondary reference
U.S. Government activity
3-80114
D/9Drawing number reference only
Circor Aerospace, Inc. Dba Circle Seal Controls Use CAGE Code 91816 for Cataloging
1-64173-057
3/2Design control — primary reference
U.S. Government activity
Related Parts
4820-01-489-5978POSSIBLE MATCH
BALL,VALVE,PORTED
2-20677-019
5340-01-490-2556POSSIBLE MATCH
HANDLE,MANUAL CONTROL
2-12122-001
3120-01-494-3134POSSIBLE MATCH
BEARING,WASHER,THRUST
1-19582-097
5305-01-644-2203POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
50420-086
5305-01-644-2340POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
50527-202
Frequently Asked Questions
What is NSN 4820-01-489-5958?
NSN 4820-01-489-5958 is a Guide,valve Stem, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-489-5958?
5 possible matches (shared part number, not a government interchangeability claim): 4820-01-489-5978, 5340-01-490-2556, 3120-01-494-3134. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-489-5958 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 4820-01-489-5958?
NSN 4820-01-489-5958 has DEMIL Code Q. 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.