The Hose,air Duct, cataloged under National Stock Number 4720-01-263-9688, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Flexible Technologies Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4720-01-263-9688 |
| Primary Part Number | 025004000002 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Flexible Technologies Inc |
| Status | ACTIVE |
| Temp Rating | -20.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF |
| Minimum Inside Bending Radius | 0.250 INCHES IN |
| Connection Type | PLAIN BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 4.000 INCHES NOMINAL FIRST END IN |
| Material | STEEL REINFORCING WIRE |
| Material | FIBERGLASS AND 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 |
|---|---|
| 5501K63 | Mcmaster-Carr Supply Co (USA) |
| 025004000002 PRIMARY | Flexible Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 5501K33 | 5/9 Secondary reference Mcmaster-Carr Supply Co |
NSN 4720-01-263-9688 is a Hose,air Duct, manufactured by Flexible Technologies Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-263-9688 has 2 manufacturer part numbers on file: 5501K63 (Mcmaster-Carr Supply Co), 025004000002 (Flexible Technologies Inc).
Key specifications for 025004000002: Temp Rating: -20.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF; Minimum Inside Bending Radius: 0.250 INCHES IN; Connection Type: PLAIN BOTH ENDS; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. 8 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.