The Coupling Assembly,tube,flexible, cataloged under National Stock Number 4730-01-272-1268, 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 Swagelok Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Coupling Assembly,tube,flexible |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Swagelok Co (CAGE 3T9T9) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-272-1268 |
| Primary Part Number | A-4-TA-1-0028PTXR |
| Item Name | Coupling Assembly,tube,flexible |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| A-4-TA-1-0028PTXR PRIMARY | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| 10109015 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 01281-0270-0001 | 5/9 Secondary reference Rosemount Aerospace Inc Dba Rosemount Aerospace Inc |
| 01281-0270-0001 | 5/9 Secondary reference Rosemount Inc Dba Fisher Rosemount Service and Support |
| 01281-0270 | D/9 Drawing number reference only Rosemount Inc Dba Fisher Rosemount Service and Support |
NSN 4730-01-272-1268 is a Coupling Assembly,tube,flexible, manufactured by Swagelok Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-272-1268 has 1 manufacturer part number on file: A-4-TA-1-0028PTXR (Swagelok Co).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-274-1672. Verify interchangeability with system specifications before substitution.
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.