The Tee,tube to Boss, cataloged under National Stock Number 4730-01-252-6978, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-252-6978 |
| Item Name | Tee,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | PLAIN (TUBE) SECOND END |
| Connection Style | GASKET SEAL (BOSS) THIRD END |
| Connection Style | PLAIN (TUBE) FIRST END |
| Connection Type | THREADED INTERNAL BOSS THIRD END |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES FIRST END IN |
| Leg Length | 1.060 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.060 INCHES NOMINAL FIRST END IN |
| Leg Length | 0.875 INCHES NOMINAL THIRD END IN |
| Nominal Thread Size | 1.187 INCHES THIRD END IN |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3B THIRD END |
| Thread Quantity Per Inch | 12 THIRD END |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) THIRD END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 1D49484-503 | 5/9 Secondary reference The Boeing Company |
| 1D49484-503 | 3/9 Design control — primary reference Mcdonnell Douglas Corp Mcdonnell Douglas Aerospace Defense and Electronics Systems |
| 1D49484-1 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company |
| 1D49484-503 | C/1 Advisory reference — outside the item-of-supply concept Drs Network & Imaging Systems Llc |
| 1D49484 | D/9 Drawing number reference only The Boeing Company |
| 1D49484-501 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company |
NSN 4730-01-252-6978 is a Tee,tube to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-252-6978: Connection Style: PLAIN (TUBE) SECOND END; Connection Style: GASKET SEAL (BOSS) THIRD END; Connection Style: PLAIN (TUBE) FIRST END; Connection Type: THREADED INTERNAL BOSS THIRD END. 17 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.