NSN 1660-00-520-9625 · NIIN 005209625 · Part number 15664
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 1660-00-520-9625 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-520-9625. Manufacturer of record part number: 15664.
Also searched as1660-00-520-9625 ·
1660005209625 ·
NIIN 005209625 ·
00-520-9625 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 04577 · 15664
Manufacturer of record: Mission Systems Orchard Park Inc
Identification
NSN: 1660-00-520-9625
NIIN: 005209625
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 15664
Manufacturer: Mission Systems Orchard Park Inc
General Description
The Seat and Valve Assy, cataloged under National Stock Number 1660-00-520-9625, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
Seat and Valve Assy
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
1660-00-520-9625
Primary Part Number
15664
Item Name
Seat and Valve Assy
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 Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
1560-01-021-5498POSSIBLE MATCH
RUNG,ENTRY LADDER
Possible match (shared part number)
5998-01-172-693615664POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
Possible match (shared part number)Datum Inc Bancomm-Timing Div
2590-01-330-6102POSSIBLE MATCH
REEL,CABLE
Possible match (shared part number)
5306-01-526-503512562447-03POSSIBLE MATCH
BOLT,U
Possible match (shared part number)U S Army Tank Automotive Command Amsta-Im-Mm
4720-01-663-146215664POSSIBLE MATCH
HOSE ASSEMBLY,NONMETALLIC
Possible match (shared part number)Hdt Expeditionary Systems Inc
2540-01-710-492215664POSSIBLE MATCH
TARPAULIN
Possible match (shared part number)Transhield, Inc.
NSN 1660-00-520-9625 is a Seat and Valve Assy, 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 1660-00-520-9625?
NSN 1660-00-520-9625 has 1 manufacturer part number on file: 15664 (Mission Systems Orchard Park Inc).
What NSN replaces 1660-00-520-9625?
6 possible matches (shared part number, not a government interchangeability claim): 1560-01-021-5498, 5998-01-172-6936, 2590-01-330-6102. Verify interchangeability with system specifications before substitution.
Is NSN 1660-00-520-9625 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 1660-00-520-9625?
NSN 1660-00-520-9625 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.