The Collar Controller, cataloged under National Stock Number 1660-00-452-3575, 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 Aerospace Yeovil Div Aerospace -Yeovil. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Collar Controller |
| FSC / FSG | 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16) |
| Manufacturers | Honeywell Aerospace Yeovil Div Aerospace -Yeovil (CAGE U1605) |
| Parameter | Value |
|---|---|
| NSN | 1660-00-452-3575 |
| Primary Part Number | 558838 |
| Item Name | Collar Controller |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Honeywell Aerospace Yeovil Div Aerospace -Yeovil |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 558838 PRIMARY | Honeywell Aerospace Yeovil Div Aerospace -Yeovil (GBR) |
NSN 1660-00-452-3575 is a Collar Controller, manufactured by Honeywell Aerospace Yeovil Div Aerospace -Yeovil, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-452-3575 has 1 manufacturer part number on file: 558838 (Honeywell Aerospace Yeovil Div Aerospace -Yeovil).
1 possible match (shared part number, not a government interchangeability claim): 2935-00-946-5379. Verify interchangeability with system specifications before substitution.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1660-00-452-3575 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.