The Coupling,tube, cataloged under National Stock Number 4730-01-119-0555, 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 Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-119-0555 |
| Primary Part Number | MR54123T-04 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 SHORT COUPLING NUT |
| Connection Style | PLAIN (TUBE) FIRST END |
| Connection Style | INVERTED FLARE (TUBE) SECOND END BULKHEAD |
| Nominal Overall Length | 1.204 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE SECOND END BULKHEAD |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Style Designator | RIGID, SHORT CENTER WRENCHING FACILITY |
| Material Document and Classification | AMS4965,6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES SECOND END BULKHEAD |
| Thread Class | 3A SECOND END BULKHEAD A |
| Thread Class | 3B FIRST END |
| Thread Quantity Per Inch | 24 ALL ENDS |
| Material | TITANIUM OVERALL |
| Thread Series Designator | UNJS ALL ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MR54124T-04 | Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division (USA) |
| AE16831-4 | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| MR54123T-04 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division (USA) |
| MR54124T-04 PRIMARY | HS Marston Aerospace Limited (GBR) |
| AE16444-4 PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| 7M526T4 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10108560 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 7M526 | D/9 Drawing number reference only The Boeing Company Div Defense |
| AP641T04 | 5/9 Secondary reference Progressive Steel Rule Die Co Inc |
NSN 4730-01-119-0555 is a Coupling,tube, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-119-0555 has 6 manufacturer part numbers on file: MR54124T-04 (Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division), AE16831-4 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), MR54123T-04 (Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division), MR54124T-04 (HS Marston Aerospace Limited), AE16444-4 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution) and 1 more.
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-167-6568, 4730-01-213-1015, 4730-01-248-6318. Verify interchangeability with system specifications before substitution.
Key specifications for MR54123T-04: Furnished Items and Quantity: 1 SHORT COUPLING NUT; Connection Style: PLAIN (TUBE) FIRST END; Connection Style: INVERTED FLARE (TUBE) SECOND END BULKHEAD; Nominal Overall Length: 1.204 INCHES IN. 16 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.
NSN 4730-01-119-0555 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.