The Hose,air Duct, cataloged under National Stock Number 4720-01-407-1909, 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 10 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 | 4720-01-407-1909 |
| Primary Part Number | 5266K23 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Measuring Method and Length | 300.000 INCHES NOMINAL OVERALL IN |
| Minimum Inside Bending Radius | 1.300 INCHES IN |
| Connection Type | PLAIN BOTH ENDS |
| Style Designator | FULLY CONVOLUTED |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 1.250 INCHES NOMINAL FIRST END IN |
| Material | STEEL REINFORCING WIRE |
| Material | FIBERGLASS AND RUBBER SILICONE CLASS Q FIRST PLY |
| Material | FIBERGLASS AND RUBBER SILICONE CLASS Q SECOND PLY |
| Material | FIBERGLASS AND RUBBER SILICONE CLASS Q COVER |
| 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 |
|---|---|
| 5266K23 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 4720-01-407-1909 is a Hose,air Duct, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-407-1909 has 1 manufacturer part number on file: 5266K23 (Mcmaster-Carr Supply Co).
Key specifications for 5266K23: Measuring Method and Length: 300.000 INCHES NOMINAL OVERALL IN; Minimum Inside Bending Radius: 1.300 INCHES IN; Connection Type: PLAIN BOTH ENDS; Style Designator: FULLY CONVOLUTED. 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.
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.