The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-703-4265, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1660-01-703-4265 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| Aircraft Station Number | FS.245 |
| Material Document and Classification | MIL-T-6737 MIL SPEC SINGLE MATERIAL RESPONSE |
| Aircraft Location | DUCT ASSEMBLY, FLIGHT DECK BLEED AIR UPPER |
| Material | STEEL |
| Aircraft Mission Design Series | C-130 O6F |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 152-11002-101 | 3/2 Design control — primary reference U.S. Government activity |
| 698489-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-01-703-4265 is a Duct Assembly,air Conditioning-H, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1560-01-705-4965. Verify interchangeability with system specifications before substitution.
Key specifications for 1660-01-703-4265: Aircraft Station Number: FS.245; Material Document and Classification: MIL-T-6737 MIL SPEC SINGLE MATERIAL RESPONSE; Overall Length: 40.69 INCHES NOMINAL IN; Special Features: 2.5 INCHE OUTSIDE DIAMETER/FLANGED ENDS/INSULATED. 5 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.
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.