The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-00-520-5637, 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 Dla Aviation Engineering Div Department of Defense. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-520-5637 |
| Primary Part Number | 005205637-96041 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Dla Aviation Engineering Div Department of Defense |
| Status | ACTIVE |
| Material Document and Classification | MIL-T-8808A MIL SPEC SINGLE MATERIAL RESPONSE A |
| Material Thickness | 0.035 INCHES NOMINAL IN |
| Material | STEEL |
| Aircraft Mission Design Series | B-52 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 005205637-96041 | Dla Aviation Engineering Div Department of Defense (USA) |
| 005205637-96043 | Dla Aviation Engineering Div Department of Defense (USA) |
| Reference | Meaning |
|---|---|
| 35-31548-1 | 5/2 Secondary reference U.S. Government activity |
| 35-31548-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-00-520-5637 is a Duct Assembly,air Conditioning-H, manufactured by Dla Aviation Engineering Div Department of Defense, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-520-5637 has 2 manufacturer part numbers on file: 005205637-96041 (Dla Aviation Engineering Div Department of Defense), 005205637-96043 (Dla Aviation Engineering Div Department of Defense).
Key specifications for 005205637-96041: Material Document and Classification: MIL-T-8808A MIL SPEC SINGLE MATERIAL RESPONSE A; Overall Length: 28.720 INCHES NOMINAL IN; Material Thickness: 0.035 INCHES NOMINAL IN; Special Features: 2.500 IN. OD IN. 4 specifications are 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 1660-00-520-5637 has DEMIL Code D. 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.