The Tee,tube, cataloged under National Stock Number 4730-01-238-4124, 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 The Boeing Company Div Defense. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-238-4124 |
| Primary Part Number | ST7M231T040406 |
| Item Name | Tee,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Connection Style | SWIVEL NUT INVERTED FLARE (TUBE) SECOND END |
| Connection Style | INVERTED FLARE (TUBE) FIRST END |
| Connection Style | INVERTED FLARE (TUBE) THIRD END |
| Criticality Code Justification | FEAT |
| Connection Type | THREADED EXTERNAL TUBE THIRD END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED INTERNAL TUBE SECOND END |
| Material Document and Classification | AMS4965,6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES THIRD END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES SECOND END IN |
| Leg Length | 0.684 INCHES NOMINAL SECOND END IN |
| Leg Length | 0.704 INCHES NOMINAL THIRD END IN |
| Leg Length | 0.808 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 0.562 INCHES THIRD END IN |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Seat Angle | 8.5 DEGREES FIRST END |
| Seat Angle | 8.5 DEGREES SECOND END |
| Seat Angle | 8.5 DEGREES THIRD END |
| Thread Class | 3A FIRST END A |
| Thread Class | 3A THIRD END A |
| Thread Class | 3B SECOND END |
| Thread Quantity Per Inch | 24 FIRST END |
| Thread Quantity Per Inch | 20 SECOND END |
| Thread Quantity Per Inch | 24 THIRD END |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNJS SECOND END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| AE16401-04-04-06 | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| AP378T040406 | Sps Technologies, Llc Dba Airdrome Precision Components (USA) |
| ST7M231T040406 PRIMARY | The Boeing Company Div Defense (USA) |
| TF378T040406 | Smiths Tubular Systems-Laconia, Inc. (USA) |
| R45133T040406 | Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division (USA) |
| Reference | Meaning |
|---|---|
| ST7M231 | 3/1 Design control — primary reference The Boeing Company Div Defense |
NSN 4730-01-238-4124 is a Tee,tube, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-238-4124 has 5 manufacturer part numbers on file: AE16401-04-04-06 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), AP378T040406 (Sps Technologies, Llc Dba Airdrome Precision Components), ST7M231T040406 (The Boeing Company Div Defense), TF378T040406 (Smiths Tubular Systems-Laconia, Inc.), R45133T040406 (Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division).
Key specifications for ST7M231T040406: Connection Style: SWIVEL NUT INVERTED FLARE (TUBE) SECOND END; Connection Style: INVERTED FLARE (TUBE) FIRST END; Connection Style: INVERTED FLARE (TUBE) THIRD END; Criticality Code Justification: FEAT. 28 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.