The Tee,tube, cataloged under National Stock Number 4730-01-256-7144, 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 Precision Aircraft Machining Company, Inc. Dba Pamco Div Precision Aircraft Machining Co Dba Pamco. Government technical data includes 24 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4730-01-256-7144 |
| Primary Part Number | 110-099-3W |
| Item Name | Tee,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Precision Aircraft Machining Company, Inc. Dba Pamco Div Precision Aircraft Machining Co Dba Pamco |
| Status | ACTIVE |
| Connection Style | INVERTED FLARE (TUBE) FIRST END |
| Connection Style | PLAIN (TUBE) THIRD END |
| Connection Style | PLAIN (TUBE) SECOND END |
| Connection Type | THREADED EXTERNAL TUBE THIRD END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES THIRD END IN |
| Leg Length | 0.781 INCHES NOMINAL FIRST END IN |
| Leg Length | 1.243 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.992 INCHES NOMINAL THIRD END IN |
| Nominal Thread Size | 0.562 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Nominal Thread Size | 0.750 INCHES THIRD END IN |
| Nominal Thread Size | 0.750 INCHES THIRD END BULKHEAD IN |
| Seat Angle | 12.0 DEGREES FIRST END |
| Thread Class | 3A SECOND END A |
| Thread Class | 3A THIRD END A |
| Thread Class | 3A THIRD END BULKHEAD A |
| Thread Class | 3B FIRST END |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) THIRD END BULKHEAD |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
|---|---|
| 110-099-3W | Precision Aircraft Machining Company, Inc. Dba Pamco Div Precision Aircraft Machining Co Dba Pamco (USA) |
| 110-099-3W | Nelson Aero Space, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 110-099 | D/9 Drawing number reference only U.S. Government activity |
| 110-099-3D | 5/9 Secondary reference U.S. Government activity |
| 110-099-3W | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-256-7144 is a Tee,tube, manufactured by Precision Aircraft Machining Company, Inc. Dba Pamco Div Precision Aircraft Machining Co Dba Pamco, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-256-7144 has 2 manufacturer part numbers on file: 110-099-3W (Precision Aircraft Machining Company, Inc. Dba Pamco Div Precision Aircraft Machining Co Dba Pamco), 110-099-3W (Nelson Aero Space, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-650-8546. Verify interchangeability with system specifications before substitution.
Key specifications for 110-099-3W: Connection Style: INVERTED FLARE (TUBE) FIRST END; Connection Style: PLAIN (TUBE) THIRD END; Connection Style: PLAIN (TUBE) SECOND END; Connection Type: THREADED EXTERNAL TUBE THIRD END. 24 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.