The Cover,actuator, cataloged under National Stock Number 1660-00-671-3879, 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 Triumph Thermal Systems - Maryland, Inc.. Government technical data includes 1 specification, 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-671-3879 |
| Primary Part Number | 22524-3 |
| Item Name | Cover,actuator |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Triumph Thermal Systems - Maryland, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | ALUM ALLOY PER QQ-A-601 COMP 3,TEMP T71;PROOF TEST AT 200 PSIG;1.737 IN. LG BY 4.000 IN. DIA O/A;8 0.218 IN. DIA HOLES ON 3.500 IN. DIA BOLT CIRCLE;2.120 IN. LG BY 1.160 IN. WD FLANGE W/2 0.199 IN. DIA MOUNTING HOLES AND ONE 0.375 IN. DIA BORE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 22524-3 PRIMARY | Triumph Thermal Systems - Maryland, Inc. (USA) |
NSN 1660-00-671-3879 is a Cover,actuator, manufactured by Triumph Thermal Systems - Maryland, Inc., classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-671-3879 has 1 manufacturer part number on file: 22524-3 (Triumph Thermal Systems - Maryland, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-147-1488. Verify interchangeability with system specifications before substitution.
Key specifications for 22524-3: General Characteristics Item Description: ALUM ALLOY PER QQ-A-601 COMP 3,TEMP T71;PROOF TEST AT 200 PSIG;1.737 IN. LG BY 4.000 IN. DIA O/A;8 0.218 IN. DIA HOLES ON 3.500 IN. DIA BOLT CIRCLE;2.120 IN. LG BY 1.160 IN. WD FLANGE W/2 0.199 IN. DIA MOUNTING HOLES AND ONE 0.375 IN. DIA BORE IN. 1 specification is documented in the U.S. Government catalog.
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 1660-00-671-3879 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.