The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-114-4018, 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 The Boeing Company Div Defense. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16) |
| Manufacturers | Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc (CAGE 25167); The Boeing Company Div Defense (CAGE 76301) |
| Parameter | Value |
|---|---|
| NSN | 1660-01-114-4018 |
| Primary Part Number | 74B830101-183 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 74B830101-183 | Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc (USA) |
| 74B830101-183 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10138029 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 30A70-300-3-1 | 5/9 Secondary reference Rsa Engineered Products, Llc Dba Rsa Engineered Products Llc |
NSN 1660-01-114-4018 is a Duct Assembly,air Conditioning-H, manufactured by The Boeing Company Div Defense, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-114-4018 has 2 manufacturer part numbers on file: 74B830101-183 (Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc), 74B830101-183 (The Boeing Company Div Defense).
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.