The Hose Assembly,air Duct, cataloged under National Stock Number 4720-01-197-9951, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Flexfab Llc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4720-01-197-9951 |
| Primary Part Number | USN102632011608 |
| Item Name | Hose Assembly,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Flexfab Llc |
| Status | ACTIVE |
| Measuring Method and Length | 29.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | PREFORMED FIRST END |
| Style Designator | FULLY CONVOLUTED |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.030 INCHES MINIMUM IN |
| Operating Pressure | 5.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Features Provided | OZONE RESISTANT |
| Inside Diameter | 4.250 INCHES NOMINAL FIRST END IN |
| End Overall Length | 2.000 INCHES NOMINAL BOTH ENDS IN |
| End Inside Diameter | 4.000 INCHES NOMINAL FIRST END 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 |
|---|---|
| 5262554 | Raytheon Company (USA) |
| USN102632011608 PRIMARY | Flexfab Llc (USA) |
| 5262554 PRIMARY | Arrowhead Products Corp (USA) |
| 5262554 | Flexible Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 5262554 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| 5262554 | 5/9 Secondary reference Flexfab Llc |
NSN 4720-01-197-9951 is a Hose Assembly,air Duct, manufactured by Flexfab Llc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-197-9951 has 4 manufacturer part numbers on file: 5262554 (Raytheon Company), USN102632011608 (Flexfab Llc), 5262554 (Arrowhead Products Corp), 5262554 (Flexible Technologies Inc).
Key specifications for USN102632011608: Measuring Method and Length: 29.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND BOTH ENDS; Connection Type: PREFORMED FIRST END; Style Designator: FULLY CONVOLUTED. 11 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.