The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-470-6818, 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. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-470-6818 |
| Primary Part Number | 7-511711034-1 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Material Document and Classification | AMS5576 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5557 ASSN STD SINGLE MATERIAL RESPONSE |
| Material | STEEL COMP 321 |
| 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 |
|---|---|
| 7-511711034-1 PRIMARY | The Boeing Company (USA) |
| 7-511711034-1 | Heligear Acquisition Co. Dba Northstar Aerospace Phoenix (USA) |
| 7-511711034-1 | Eaton Corporation Div Fed (USA) |
| Reference | Meaning |
|---|---|
| 7-511711034 | D/9 Drawing number reference only The Boeing Company |
NSN 1660-01-470-6818 is a Duct Assembly,air Conditioning-H, manufactured by The Boeing Company, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-470-6818 has 3 manufacturer part numbers on file: 7-511711034-1 (The Boeing Company), 7-511711034-1 (Heligear Acquisition Co. Dba Northstar Aerospace Phoenix), 7-511711034-1 (Eaton Corporation Div Fed).
Key specifications for 7-511711034-1: Material Document and Classification: AMS5576 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5557 ASSN STD SINGLE MATERIAL RESPONSE; Special Features: 2" DIA TUBING BENT R 5.00 PER DRAWING; FLANGES WELDED TO BOTH ENDS; 60 PSI; TEMPERATURE 550 DEG F; OPERATING MEDIUM-AIR; OVERALL WIDTH 10" DEGF; Part Name Assigned by Controlling Agency: DUCT ASSY-PRESSURE REGULATOR, SOV, LH; End Item Identification: NSN 1520-01-355-8250; APACHE ATTACK HELICOPTER. 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 1660-01-470-6818 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.