The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-198-4945, 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 2 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-198-4945 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| Aircraft Location | PRIMARY EXHAUST SYSTEM PLUG ASSEMBLY |
| 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 |
| Reference | Meaning |
|---|---|
| 65C18566-602 | 5/2 Secondary reference U.S. Government activity |
| 65C18566-616 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-01-198-4945 is a Duct Assembly,air Conditioning-H, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
Key specifications for 1660-01-198-4945: Special Features: CONSIST OF ONE FORWARD CONE ASSEMBLY; TWO RINGS; TWO INDEX PINS, TWO NUT, SIX NUTPLATE, TWO WASHER; FINISH F-4.10; NHA 65C18565; Aircraft Location: PRIMARY EXHAUST SYSTEM PLUG ASSEMBLY; End Item Identification: KC-135; Aircraft Mission Design Series: KC-135. 2 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 1660-01-198-4945 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.