The Coupling,tube, cataloged under National Stock Number 4730-01-706-0259, 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 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-706-0259 |
| Primary Part Number | MR54040T-2120A |
| 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 |
| Maximum Operating Temp | 135.0 CELSIUS SINGLE RESPONSE DEGC |
| Material | TITANIUM ALLOY NUT |
| 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 |
|---|---|
| MR54040T-2120A PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division (USA) |
| GF503BH20A | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| GF503BH | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 4730-01-706-0259 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 4730-01-706-0259 has 2 manufacturer part numbers on file: MR54040T-2120A (Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division), GF503BH20A (Northrop Grumman Systems Corporation).
Key specifications for MR54040T-2120A: Maximum Operating Temp: 135.0 CELSIUS SINGLE RESPONSE DEGC; Special Features: CORROSION RESISTANT STEEL WIRE PER AMS5637(302); Part Name Assigned by Controlling Agency: FITTING DYNATUBE/DUAL-SEAL,MECHANICALLY; End Item Identification: SPECIAL, AIR VEHICLE, AIRCRAFT. 2 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.