The Hose,air Duct, cataloged under National Stock Number 4720-01-604-1738, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-604-1738 |
| Primary Part Number | 5257K23 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Measuring Method and Length | 5.0 FEET NOMINAL OVERALL FT |
| Temp Rating | -10.0 FAHRENHEIT AND 150.0 FAHRENHEIT DEGF |
| Minimum Inside Bending Radius | 12.5 INCHES IN |
| Connection Style | ROUND BOTH ENDS |
| Vacuum Rating | 4.0 INCHES OF MERCURY IN |
| Connection Type | PLAIN BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.187 INCHES NOMINAL IN |
| Outside Diameter | 6.25 INCHES NOMINAL BOTH ENDS IN |
| Operating Pressure | 2.5 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Inside Diameter | 6.0 INCHES NOMINAL BOTH ENDS IN |
| End Overall Length | 0.1 INCHES NOMINAL BOTH ENDS IN |
| End Inside Diameter | 6.0 INCHES NOMINAL BOTH ENDS IN |
| Material | STEEL REINFORCING WIRE |
| Material | PLASTIC POLYVINYL FIRST PLY |
| 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 |
|---|---|
| 5257K23 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 4720-01-604-1738 is a Hose,air Duct, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-604-1738 has 1 manufacturer part number on file: 5257K23 (Mcmaster-Carr Supply Co).
Key specifications for 5257K23: Measuring Method and Length: 5.0 FEET NOMINAL OVERALL FT; Temp Rating: -10.0 FAHRENHEIT AND 150.0 FAHRENHEIT DEGF; Minimum Inside Bending Radius: 12.5 INCHES IN; Connection Style: ROUND BOTH ENDS. 16 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.