The Duct, cataloged under National Stock Number 1660-00-690-5016, 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 Flexfab Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Duct |
| FSC / FSG | 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16) |
| Manufacturers | Flexfab Llc (CAGE 16632) |
| Parameter | Value |
|---|---|
| NSN | 1660-00-690-5016 |
| Primary Part Number | USL1001 |
| Item Name | Duct |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Flexfab Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| USL1001 PRIMARY | Flexfab Llc (USA) |
| Reference | Meaning |
|---|---|
| AD645-3 | 3/2 Design control — primary reference U.S. Government activity |
| 1660H13-002-3 | 3/2 Design control — primary reference U.S. Government activity |
| 47-733-131-3 | 3/2 Design control — primary reference U.S. Government activity |
| SAC541 | 5/9 Secondary reference Cooper Industries Inc Cooper Airmotive Div |
NSN 1660-00-690-5016 is a Duct, manufactured by Flexfab Llc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-690-5016 has 1 manufacturer part number on file: USL1001 (Flexfab Llc).
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.