The Hose,air Duct, cataloged under National Stock Number 4720-01-014-2691, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Echelon Supply and Service, Inc.. Government technical data includes 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-014-2691 |
| Primary Part Number | U1J-MDK89525-3 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Echelon Supply and Service, Inc. |
| Status | ACTIVE |
| Measuring Method and Length | 35.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND FIRST END |
| Connection Type | SOFT FIRST END |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Material Document and Classification | MIL-H-7365 MIL SPEC SINGLE MATERIAL RESPONSE SINGLE PLY |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 4.000 INCHES NOMINAL FIRST END IN |
| End Overall Length | 2.000 INCHES NOMINAL FIRST END IN |
| Material | RUBBER SINGLE 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 |
|---|---|
| U1J-MDK89525-3 PRIMARY | Echelon Supply and Service, Inc. (USA) |
| Reference | Meaning |
|---|---|
| AME2003-3 | 5/9 Secondary reference Flexfab Llc |
| FT4964-4 | 5/9 Secondary reference Flexible Technologies Inc |
| MDK89525-3 | C/1 Advisory reference — outside the item-of-supply concept Drs Environmental Systems Inc |
| MDK89525-3 | 7/9 Vendor item drawing reference U.S. Government activity |
NSN 4720-01-014-2691 is a Hose,air Duct, manufactured by Echelon Supply and Service, Inc., classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-014-2691 has 1 manufacturer part number on file: U1J-MDK89525-3 (Echelon Supply and Service, Inc.).
Key specifications for U1J-MDK89525-3: Measuring Method and Length: 35.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND FIRST END; Connection Type: SOFT FIRST END; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. 9 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.