The Tee,tube, cataloged under National Stock Number 4730-01-149-2014, 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 18 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-149-2014 |
| Primary Part Number | 7M637BX-40 |
| 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 | FLARED (TUBE) ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE THIRD END BULKHEAD |
| Nominal Outside Diameter Tube Accommodated | 2.500 INCHES ALL ENDS IN |
| Leg Length | 3.105 INCHES NOMINAL FIRST END IN |
| Leg Length | 3.105 INCHES NOMINAL SECOND END IN |
| Leg Length | 4.812 INCHES NOMINAL THIRD END IN |
| Nominal Thread Size | 3.000 INCHES ALL ENDS IN |
| Nominal Thread Size | 3.000 INCHES THIRD END BULKHEAD IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Surface Treatment | ALUMINUM OVERALL |
| Thread Class | 3A ALL ENDS A |
| Thread Class | 3A THIRD END BULKHEAD A |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Thread Quantity Per Inch | 12 THIRD END BULKHEAD |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) THIRD END BULKHEAD |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) ALL ENDS |
| 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 |
|---|---|
| 7M637BX-40 | Nelson Aero Space, Inc. (USA) |
| 7M637BX-40 | Sps Technologies, Llc Dba Airdrome Precision Components (USA) |
| 7M637BX-40 PRIMARY | The Boeing Company Div Defense (USA) |
| 7M637BX-40 | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply (USA) |
| Reference | Meaning |
|---|---|
| 7M637BX-40 | 5/9 Secondary reference Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company |
| 7M637BX-40 | 5/9 Secondary reference Faber Enterprises, Inc. Div Faber Enterprise Inc |
| 7M637BX-4D | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company Div Defense |
NSN 4730-01-149-2014 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 4730-01-149-2014 has 4 manufacturer part numbers on file: 7M637BX-40 (Nelson Aero Space, Inc.), 7M637BX-40 (Sps Technologies, Llc Dba Airdrome Precision Components), 7M637BX-40 (The Boeing Company Div Defense), 7M637BX-40 (Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply).
Key specifications for 7M637BX-40: Connection Style: FLARED (TUBE) ALL ENDS; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Connection Type: THREADED EXTERNAL TUBE THIRD END BULKHEAD; Nominal Outside Diameter Tube Accommodated: 2.500 INCHES ALL ENDS IN. 18 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.