The Hose,air Duct, cataloged under National Stock Number 4720-01-657-6556, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Novaflex Hose 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-657-6556 |
| Primary Part Number | 3UL15000 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Novaflex Hose Inc |
| Status | ACTIVE |
| Temp Rating | -200.00 FAHRENHEIT AND 1500.00 FAHRENHEIT DEGF |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | PLAIN BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 6.00 INCHES NOMINAL BOTH ENDS IN |
| 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 |
|---|---|
| 3UL15000 PRIMARY | Novaflex Hose Inc (USA) |
| Reference | Meaning |
|---|---|
| 3UL15000 | 3/9 Design control — primary reference Novaflex Hose |
NSN 4720-01-657-6556 is a Hose,air Duct, manufactured by Novaflex Hose Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-657-6556 has 1 manufacturer part number on file: 3UL15000 (Novaflex Hose Inc).
Key specifications for 3UL15000: Temp Rating: -200.00 FAHRENHEIT AND 1500.00 FAHRENHEIT DEGF; Connection Style: ROUND BOTH ENDS; Connection Type: PLAIN BOTH ENDS; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. 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.