The Hose,air Duct, cataloged under National Stock Number 4720-01-628-0608, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-628-0608 |
| Primary Part Number | LE271-0105-0413 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Measuring Method and Length | 3.25 INCHES NOMINAL EXCLUDING END FITTINGS IN |
| Temp Rating | -90.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF |
| Minimum Inside Bending Radius | 1.2 INCHES IN |
| Style Designator | FULLY CONVOLUTED W/ WIRE RINGS BETWEEN CONVOLUTIONS |
| Cross-Sectional Shape Style | ROUND |
| Operating Pressure | 40.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Inside Diameter | 1.25 INCHES NOMINAL BOTH ENDS IN |
| Material | FIBERGLASS SECOND PLY |
| Material | RUBBER SILICONE CLASS Q FIRST END COUPLING |
| 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 |
|---|---|
| 21A18-05C21-4 | Rsa Engineered Products, Llc Dba Rsa Engineered Products Llc (USA) |
| LE271-0105-0413 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 4720-01-628-0608 is a Hose,air Duct, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-628-0608 has 2 manufacturer part numbers on file: 21A18-05C21-4 (Rsa Engineered Products, Llc Dba Rsa Engineered Products Llc), LE271-0105-0413 (The Boeing Company Div Legacy Am&m).
Key specifications for LE271-0105-0413: Measuring Method and Length: 3.25 INCHES NOMINAL EXCLUDING END FITTINGS IN; Temp Rating: -90.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF; Minimum Inside Bending Radius: 1.2 INCHES IN; Style Designator: FULLY CONVOLUTED W/ WIRE RINGS BETWEEN CONVOLUTIONS. 9 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.
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.