The Nut,tube Coupling, cataloged under National Stock Number 4730-01-661-2198, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-661-2198 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| 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 |
| Reference | Meaning |
|---|---|
| BACN10YA8N | 5/1 Secondary reference Faber Enterprises, Inc. Div Faber Enterprise Inc |
| BACN10YA8N | 5/1 Secondary reference Senior Operations Llc Dba Senior Aerospace Spencer |
| BACN10YA8N | 5/1 Secondary reference Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company |
| BACN10YA8N | 3/1 Design control — primary reference U.S. Government activity |
| BACN10YA8N | 5/1 Secondary reference Atlas Specialty Products, Llc |
| BACN10YA8N | 5/1 Secondary reference Aerofit, Llc |
| BACN10YA8N | 5/1 Secondary reference Sps Technologies, Llc Dba Airdrome Precision Components |
NSN 4730-01-661-2198 is a Nut,tube Coupling, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
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.