The Hose,air Duct, cataloged under National Stock Number 4720-01-477-4027, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Flexfab Llc. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-477-4027 |
| Primary Part Number | DOU1143-0039 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Flexfab Llc |
| Status | ACTIVE |
| Measuring Method and Length | 11.000 INCHES NOMINAL OVERALL IN |
| Minimum Inside Bending Radius | 2.250 INCHES IN |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | PREFORMED BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.050 INCHES NOMINAL IN |
| Inside Diameter | 1.500 INCHES NOMINAL FIRST END IN |
| End Overall Length | 1.000 INCHES NOMINAL BOTH ENDS IN |
| End Inside Diameter | 1.500 INCHES NOMINAL BOTH ENDS IN |
| 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 |
|---|---|
| DOU1143-0039 PRIMARY | Flexfab Llc (USA) |
| BWT17303-1 PRIMARY | Bull Hn Information Systems Inc (USA) |
| 7-511A21568-39 | The Boeing Company (USA) |
NSN 4720-01-477-4027 is a Hose,air Duct, manufactured by Flexfab Llc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-477-4027 has 3 manufacturer part numbers on file: DOU1143-0039 (Flexfab Llc), BWT17303-1 (Bull Hn Information Systems Inc), 7-511A21568-39 (The Boeing Company).
Key specifications for DOU1143-0039: Measuring Method and Length: 11.000 INCHES NOMINAL OVERALL IN; Minimum Inside Bending Radius: 2.250 INCHES IN; Connection Style: ROUND BOTH ENDS; Connection Type: PREFORMED BOTH ENDS. 10 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 4720-01-477-4027 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.