The Hose,air Duct, cataloged under National Stock Number 4720-01-588-3993, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Irwin International, Inc. Dba Irwin International Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-588-3993 |
| Primary Part Number | 05-29911 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Irwin International, Inc. Dba Irwin International Inc |
| Status | ACTIVE |
| Measuring Method and Length | 12.000 FEET NOMINAL OVERALL FT |
| Temp Rating | 550.0 FAHRENHEIT DEGF |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 2.750 INCHES NOMINAL BOTH ENDS IN |
| Material | RUBBER ALL PLIES |
| 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 |
|---|---|
| HW20527G | Armatec Survivability Corp Div Armatec Survivability (CAN) |
| 05-29911 PRIMARY | Irwin International, Inc. Dba Irwin International Inc (USA) |
| Reference | Meaning |
|---|---|
| 05-29911 | 3/9 Design control — primary reference Aircraft Spruce and Specialty Co a Div of Honeywell Inc |
NSN 4720-01-588-3993 is a Hose,air Duct, manufactured by Irwin International, Inc. Dba Irwin International Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-588-3993 has 2 manufacturer part numbers on file: HW20527G (Armatec Survivability Corp Div Armatec Survivability), 05-29911 (Irwin International, Inc. Dba Irwin International Inc).
Key specifications for 05-29911: Measuring Method and Length: 12.000 FEET NOMINAL OVERALL FT; Temp Rating: 550.0 FAHRENHEIT DEGF; Cross-Sectional Shape Style: ROUND; Inside Diameter: 2.750 INCHES NOMINAL BOTH ENDS IN. 5 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.