NSN 4210-01-266-9588 · NIIN 012669588 · Part number 23-020
Hydro-Test Products, Inc. Dba Hydro-Test Products Inc · FSC 4210 — Firefighting Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment · CAGE 56043
Government record, cited
NSN 4210-01-266-9588 — this item is cataloged by the U.S. Government under National Stock Number 4210-01-266-9588. Manufacturer of record part number: 23-020.
Also searched as4210-01-266-9588 ·
4210012669588 ·
NIIN 012669588 ·
01-266-9588 ·
FSC 4210 Firefighting Equipment · CAGE 56043 · 23-020
Manufacturer of record: Hydro-Test Products, Inc. Dba Hydro-Test Products Inc
Identification
NSN: 4210-01-266-9588
NIIN: 012669588
FSC: 4210 — Firefighting Equipment
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment
Primary part number: 23-020
Manufacturer: Hydro-Test Products, Inc. Dba Hydro-Test Products Inc
General Description
The Valve,fire Extinguisher, cataloged under National Stock Number 4210-01-266-9588, is classified within Federal Supply Class 4210 (Firefighting Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Hydro-Test Products, Inc. Dba Hydro-Test Products Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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
Valve,fire Extinguisher
FSC / FSG
4210 — Firefighting Equipment (FSG 42)
Manufacturers
Hydro-Test Products, Inc. Dba Hydro-Test Products Inc (CAGE 56043)
Technical Specifications
Parameter
Value
NSN
4210-01-266-9588
Primary Part Number
23-020
Item Name
Valve,fire Extinguisher
FSC / FSG
4210 / 42 — Firefighting Equipment
Manufacturer
Hydro-Test Products, Inc. Dba Hydro-Test Products Inc
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
⇄Related Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5120-01-367-377823020POSSIBLE MATCH
BIT,SCREWDRIVER
Possible match (shared part number)A T and G Inc
5220-01-546-056723020POSSIBLE MATCH
GAGE,HEADSPACE
Possible match (shared part number)Charles Reed Knight Jr Dba Knight's Armament Company
7830-01-546-690223020POSSIBLE MATCH
MEDICINE BALL
Possible match (shared part number)The Hygenic Corporation
5305-01-624-116123020POSSIBLE MATCH
SCREW,MACHINE
Possible match (shared part number)Teledyne Flir Unmanned Ground Systems, Inc
Hydro-Test Products, Inc. Dba Hydro-Test Products Inc (USA)
Related Parts
5120-01-367-3778POSSIBLE MATCH
BIT,SCREWDRIVER
23020
5220-01-546-0567POSSIBLE MATCH
GAGE,HEADSPACE
23020
7830-01-546-6902POSSIBLE MATCH
MEDICINE BALL
23020
5305-01-624-1161POSSIBLE MATCH
SCREW,MACHINE
23020
Frequently Asked Questions
What is NSN 4210-01-266-9588?
NSN 4210-01-266-9588 is a Valve,fire Extinguisher, manufactured by Hydro-Test Products, Inc. Dba Hydro-Test Products Inc, classified under FSC 4210, Firefighting Equipment. Status: active.
What part numbers are listed for NSN 4210-01-266-9588?
NSN 4210-01-266-9588 has 1 manufacturer part number on file: 23-020 (Hydro-Test Products, Inc. Dba Hydro-Test Products Inc).
What NSN replaces 4210-01-266-9588?
4 possible matches (shared part number, not a government interchangeability claim): 5120-01-367-3778, 5220-01-546-0567, 7830-01-546-6902. Verify interchangeability with system specifications before substitution.
Is NSN 4210-01-266-9588 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). 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.