The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-172-7785, 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 Aero Metal Forms 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-172-7785 |
| Primary Part Number | 65C18580-660 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Aero Metal Forms Inc |
| Status | ACTIVE |
| Aircraft Mission Design Series | KC-135 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 65C18580-660 | Aero Metal Forms Inc (USA) |
| Reference | Meaning |
|---|---|
| 65C18580-657 | 5/9 Secondary reference U.S. Government activity |
| 65C18580-660 | 3/2 Design control — primary reference U.S. Government activity |
| 65C18580-606 | 5/9 Secondary reference U.S. Government activity |
NSN 1660-01-172-7785 is a Duct Assembly,air Conditioning-H, manufactured by Aero Metal Forms Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-172-7785 has 1 manufacturer part number on file: 65C18580-660 (Aero Metal Forms Inc).
Key specifications for 65C18580-660: Special Features: NHA 65C18580-604; End Item Identification: KC-135 AIRCRAFT; Aircraft Mission Design Series: KC-135. 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 1660-01-172-7785 has DEMIL Code Q. 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.