The Coupling Assembly,tube,flexible, cataloged under National Stock Number 4730-01-048-7979, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Transdigm Inc Div Adelwiggins Group. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Coupling Assembly,tube,flexible |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Hydraflow (CAGE 24984); Transdigm Inc Div Adelwiggins Group (CAGE 79326) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-048-7979 |
| Primary Part Number | W991-20DE |
| Item Name | Coupling Assembly,tube,flexible |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Transdigm Inc Div Adelwiggins Group |
| Status | ACTIVE |
| 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 |
|---|---|
| 14J02-20A | Hydraflow (USA) |
| W991-20DE PRIMARY | Transdigm Inc Div Adelwiggins Group (USA) |
| Reference | Meaning |
|---|---|
| C7551-1-20 | 7/2 Vendor item drawing reference U.S. Government activity |
| C7551B1-20 | 5/2 Secondary reference U.S. Government activity |
| W901A20DE | 5/9 Secondary reference Transdigm Inc Div Adelwiggins Group |
| W901B20DE | 5/9 Secondary reference Transdigm Inc Div Adelwiggins Group |
| 4730PL0743861 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| W901J20DE | 5/9 Secondary reference Transdigm Inc Div Adelwiggins Group |
NSN 4730-01-048-7979 is a Coupling Assembly,tube,flexible, manufactured by Transdigm Inc Div Adelwiggins Group, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-048-7979 has 2 manufacturer part numbers on file: 14J02-20A (Hydraflow), W991-20DE (Transdigm Inc Div Adelwiggins Group).
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.