NSN 1660-01-685-4814 · NIIN 016854814 · Part number 500-040-SL 27
Kirby Morgan Dive Systems Inc · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 58366
Government record, cited
NSN 1660-01-685-4814 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-685-4814. Manufacturer of record part number: 500-040-SL 27.
Also searched as1660-01-685-4814 ·
1660016854814 ·
NIIN 016854814 ·
01-685-4814 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 58366 · 500-040-SL 27
Nearby stock numbers← 1660-01-685-4137 Regulator, Oxygen, Demand
·
1660-01-685-5139 Heat Exchanger, Air to Air, Aircra →
Features
Regulator,oxygen,demand — FSC 1660
Flow Indicator: INCLUDED
Mounting Method: BASE
Lighted Panel: NOT INCLUDED
Pressure Gage: INCLUDED
Emergency Oxygen Control Type: VALVE
Unpackaged Unit Weight: 28.47 POUNDS LBS
On-Off Switch: INCLUDED
Identification
NSN: 1660-01-685-4814
NIIN: 016854814
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 500-040-SL 27
Manufacturer: Kirby Morgan Dive Systems Inc
General Description
The Regulator,oxygen,demand, cataloged under National Stock Number 1660-01-685-4814, 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 Kirby Morgan Dive Systems Inc. Government technical data includes 8 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
1660-01-685-4814
Primary Part Number
500-040-SL 27
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.
1660-00-001-1693
DUCT ASSEMBLY,AIR CONDITIONING-H
1660-00-001-1754
BAFFLE,AIR
1660-00-001-2491
CAGE,BYPASS VALVE
1660-00-001-2493
1660-00-001-2493 · Item name not on file
1660-00-001-2496
CONTROL BOX,ELECTRICAL-ELECTRONI
1660-00-001-2497
1660-00-001-2497 · Item name not on file
1660-00-001-4130
1660-00-001-4130 · Item name not on file
1660-00-001-4479
CONTROLLER,AIR PRESSURE,AIRCRAFT
Frequently Asked Questions
What is NSN 1660-01-685-4814?
NSN 1660-01-685-4814 is a Regulator,oxygen,demand, manufactured by Kirby Morgan Dive Systems Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-685-4814?
NSN 1660-01-685-4814 has 1 manufacturer part number on file: 500-040-SL 27 (Kirby Morgan Dive Systems Inc).
What are the specifications of 500-040-SL 27?
Key specifications for 500-040-SL 27: Flow Indicator: INCLUDED; Mounting Method: BASE; Lighted Panel: NOT INCLUDED; Pressure Gage: INCLUDED. 8 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-685-4814 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.