NSN 4820-00-858-0097 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-858-0097. Manufacturer of record part number: 3329521.
The Stem,test Valve, cataloged under National Stock Number 4820-00-858-0097, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hatch & Kirk, Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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,test Valve
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Hatch & Kirk, Inc. (CAGE 55380)
Technical Specifications
Parameter
Value
NSN
4820-00-858-0097
Primary Part Number
3329521
Item Name
Stem,test Valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Hatch & Kirk, Inc.
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 Items1
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5962-01-225-1833332952-1POSSIBLE MATCH
MICROCIRCUIT,MEMORY
Possible match (shared part number)Bae Systems Information and Electronic Systems Integration Inc.
NSN 4820-00-858-0097 is a Stem,test Valve, manufactured by Hatch & Kirk, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-858-0097?
NSN 4820-00-858-0097 has 2 manufacturer part numbers on file: 3341899 (Hatch & Kirk, Inc.), 3329521 (Hatch & Kirk, Inc.).
What NSN replaces 4820-00-858-0097?
1 possible match (shared part number, not a government interchangeability claim): 5962-01-225-1833. Verify interchangeability with system specifications before substitution.
Is NSN 4820-00-858-0097 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.