NSN 1660-01-230-4558 · NIIN 012304558 · Part number PB50821-1
Honeywell Intl Inc Defense Avionics Systems · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 55972
Government record, cited
NSN 1660-01-230-4558 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-230-4558. Manufacturer of record part number: PB50821-1.
Also searched as1660-01-230-4558 ·
1660012304558 ·
NIIN 012304558 ·
01-230-4558 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 55972 · PB50821-1
Manufacturer of record: Honeywell Intl Inc Defense Avionics Systems
Identification
NSN: 1660-01-230-4558
NIIN: 012304558
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: PB50821-1
Manufacturer: Honeywell Intl Inc Defense Avionics Systems
General Description
The Regulator,oxygen,demand, cataloged under National Stock Number 1660-01-230-4558, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Honeywell Intl Inc Defense Avionics Systems. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1660-01-230-4558
Primary Part Number
PB50821-1
Item Name
Regulator,oxygen,demand
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Other items in FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1660-00-006-4472
FLANGE,VALVE BODY
1660-00-009-5646
ADAPTER ASSEMBLY,BELLOWS
1660-00-019-8389
1660-00-019-8389 · Item name not on file
1660-00-019-8399
1660-00-019-8399 · Item name not on file
1660-00-031-5285
1660-00-031-5285 · Item name not on file
1660-00-302-4390
PISTON,REGULATING V
1660-00-441-0575
PISTON
1660-01-601-0729
ETHERNET SWITCH
Frequently Asked Questions
What is NSN 1660-01-230-4558?
NSN 1660-01-230-4558 is a Regulator,oxygen,demand, manufactured by Honeywell Intl Inc Defense Avionics Systems, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-230-4558?
NSN 1660-01-230-4558 has 1 manufacturer part number on file: PB50821-1 (Honeywell Intl Inc Defense Avionics Systems).
What are the specifications of PB50821-1?
Key specifications for PB50821-1: Flow Indicator: INCLUDED; End Item Identification: SPEC PROJ BHJ; Installation Design: NONPORTABLE. 2 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-230-4558 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 1660-01-230-4558?
NSN 1660-01-230-4558 has DEMIL Code B. 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.