The Hose,metallic, cataloged under National Stock Number 4720-01-122-9152, 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 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-122-9152 |
| Primary Part Number | BW673-2-4 |
| Item Name | Hose,metallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Echelon Supply and Service, Inc. |
| Status | ACTIVE |
| Layer Composition and Location | OUTER LAYER BRAIDED WIRE |
| Layer Composition and Location | 1ST LAYER BRAIDED WIRE |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 4.000 INCHES NOMINAL IN |
| Material | NICKEL ALLOY INNER CONVEYING TUBE |
| Inner Conveying Tube Style | ANNULAR CLOSE-PITCH CORRUGATED |
| 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 |
|---|---|
| BW673-2-4 PRIMARY | Echelon Supply and Service, Inc. (USA) |
| Reference | Meaning |
|---|---|
| BW73-2 4IN | 5/9 Secondary reference Arco Metals Co Div of Atlantic Richfield Co |
| BW73-2 4IN | 5/9 Secondary reference Hyspan Precision Products, Inc. |
NSN 4720-01-122-9152 is a Hose,metallic, manufactured by Echelon Supply and Service, Inc., classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-122-9152 has 1 manufacturer part number on file: BW673-2-4 (Echelon Supply and Service, Inc.).
Key specifications for BW673-2-4: Layer Composition and Location: OUTER LAYER BRAIDED WIRE; Layer Composition and Location: 1ST LAYER BRAIDED WIRE; Cross-Sectional Shape Style: ROUND; Inside Diameter: 4.000 INCHES NOMINAL IN. 6 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.