The Duct Stub Assembly, cataloged under National Stock Number 1660-01-529-6412, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-529-6412 |
| Item Name | Duct Stub Assembly |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| 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 |
|---|---|
| 204-66080-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-01-529-6412 is a Duct Stub Assembly, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
Key specifications for 1660-01-529-6412: Special Features: FLANGE, 0.063 BY 6.7 BY 6.8 SHEET, ALUMINUM ALLOY, 6061-T4 PER QQ-A-250/11; TUBE - ALUMINUM, 6061-T4 PER BMS 7-198, 0.040 INCH WALL BY 5.0 INCH OUTSIDE DIAMETER; TEN HOLES 0.240/0.245 INCH DIAMETER IN; End Item Identification: AIRCRAFT, SENTRY E3-D. 0 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 1660-01-529-6412 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.