The Hose,air Duct, cataloged under National Stock Number 4720-01-541-3181, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4720-01-541-3181 |
| Primary Part Number | IT-5037H4-20A |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc |
| Status | ACTIVE |
| Measuring Method and Length | 5.000 INCHES NOMINAL EXCLUDING END FITTINGS IN |
| Temp Rating | 250.0 FAHRENHEIT DEGF |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Operating Pressure | 1.1 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Surface Treatment | PASSIVATE REINFORCING WIRE |
| Material | RUBBER NEOPRENE 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 |
|---|---|
| IT-5037H4-20A PRIMARY | Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc (USA) |
| DOU107308002006 | Flexfab Llc (USA) |
| Reference | Meaning |
|---|---|
| 7D0105H4-20A | 5/2 Secondary reference U.S. Government activity |
NSN 4720-01-541-3181 is a Hose,air Duct, manufactured by Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-541-3181 has 2 manufacturer part numbers on file: IT-5037H4-20A (Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc), DOU107308002006 (Flexfab Llc).
Key specifications for IT-5037H4-20A: Measuring Method and Length: 5.000 INCHES NOMINAL EXCLUDING END FITTINGS IN; Temp Rating: 250.0 FAHRENHEIT DEGF; Cross-Sectional Shape Style: ROUND; Wall Thickness: 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN. 7 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.