NSN 4820-01-264-9289 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-264-9289. Manufacturer of record part number: 21266.
Also searched as4820-01-264-9289 ·
4820012649289 ·
NIIN 012649289 ·
01-264-9289 ·
FSC 4820 Valves, Nonpowered · CAGE 60178 · 21266
The Valve,check, cataloged under National Stock Number 4820-01-264-9289, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mark Industries. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 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,check
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Mark Industries (CAGE 60178)
Technical Specifications
Parameter
Value
NSN
4820-01-264-9289
Primary Part Number
21266
Item Name
Valve,check
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Mark Industries
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 Items2
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5998-01-338-160121266POSSIBLE MATCH
EXTENDER CARD,ELECTRONIC TEST
Possible match (shared part number)Del Norte Technology Inc
6520-01-591-38111001.7452POSSIBLE MATCH
HANDPIECE,DENTAL
Possible match (shared part number)Kavo Dental Technologies Llc
NSN 4820-01-264-9289 is a Valve,check, manufactured by Mark Industries, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-264-9289?
NSN 4820-01-264-9289 has 1 manufacturer part number on file: 21266 (Mark Industries).
What NSN replaces 4820-01-264-9289?
2 possible matches (shared part number, not a government interchangeability claim): 5998-01-338-1601, 6520-01-591-3811. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-264-9289 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.