NSN 1660-00-656-7125 · NIIN 006567125 · Part number 21104
Mission Systems Orchard Park Inc · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 04577
Government record, cited
NSN 1660-00-656-7125 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-656-7125. Manufacturer of record part number: 21104.
Also searched as1660-00-656-7125 ·
1660006567125 ·
NIIN 006567125 ·
00-656-7125 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 04577 · 21104 · 21104-1
Manufacturer of record: Mission Systems Orchard Park Inc
Identification
NSN: 1660-00-656-7125
NIIN: 006567125
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 21104
Manufacturer: Mission Systems Orchard Park Inc
General Description
The Converter,liquid Oxygen, cataloged under National Stock Number 1660-00-656-7125, 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 Mission Systems Orchard Park Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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
Converter,liquid Oxygen
FSC / FSG
1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16)
Manufacturers
Mission Systems Orchard Park Inc (CAGE 04577)
Technical Specifications
Parameter
Value
NSN
1660-00-656-7125
Primary Part Number
21104
Item Name
Converter,liquid Oxygen
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Manufacturer
Mission Systems Orchard Park Inc
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL B — Remove Demilitarization Key Points
Hazard
No hazard code in the DLA record (HMIC N)
⇄Related Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5950-00-856-068321-104POSSIBLE MATCH
FILTER
Possible match (shared part number)Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
5910-01-094-5821211041POSSIBLE MATCH
CAPACITOR,FIXED
Possible match (shared part number)Ametek, Inc. Dba Aerospace Gst Div Aerospace
3030-01-192-96731807444C1POSSIBLE MATCH
BELTS,V,MATCHED SET
Possible match (shared part number)Navistar Intl Corp Truck Br Ohio Plant
5910-01-249-260821-1041POSSIBLE MATCH
CAPACITOR,FIXED,ELECTROLYTIC
Possible match (shared part number)Astronics Test Systems Inc
4320-01-304-369821104POSSIBLE MATCH
ARM,HANGER,PUMP
Possible match (shared part number)Parker Hannifin Corporation Div Hydraulic Systems Division
5120-01-335-140821104POSSIBLE MATCH
PUNCH,DRIVE PIN
Possible match (shared part number)Mayhew Steel Products Inc
5355-01-364-864321104POSSIBLE MATCH
KNOB
Possible match (shared part number)Parker-Hannifin Corporation Dba Racor Division Div Racor Division
4730-01-417-944421104 FIND 35POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
NSN 1660-00-656-7125 is a Converter,liquid Oxygen, manufactured by Mission Systems Orchard Park Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-00-656-7125?
NSN 1660-00-656-7125 has 1 manufacturer part number on file: 21104 (Mission Systems Orchard Park Inc).
What NSN replaces 1660-00-656-7125?
8 possible matches (shared part number, not a government interchangeability claim): 5950-00-856-0683, 5910-01-094-5821, 3030-01-192-9673. Verify interchangeability with system specifications before substitution.
Is NSN 1660-00-656-7125 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 1660-00-656-7125?
NSN 1660-00-656-7125 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.