The Tee,pipe, cataloged under National Stock Number 4730-01-331-2859, 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 14 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-331-2859 |
| Item Name | Tee,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 2.000 INCHES FIRST END IN |
| Nominal Pipe Size Accommodated | 2.000 INCHES THIRD END IN |
| Nominal Pipe Size Accommodated | 1.500 INCHES SECOND END IN |
| Connection Style | SOCKET (PIPE) FIRST END |
| Connection Style | SOCKET (PIPE) SECOND END |
| Connection Style | SOCKET (PIPE) THIRD END |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Connection Type | UNTHREADED INTERNAL PIPE THIRD END |
| Connection Type | UNTHREADED INTERNAL PIPE SECOND END |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 2.480 INCHES MINIMUM AND 2.520 INCHES MAXIMUM SECOND END IN |
| Leg Length | 2.480 INCHES MINIMUM AND 2.520 INCHES MAXIMUM THIRD END IN |
| Leg Length | 2.488 INCHES MINIMUM AND 2.520 INCHES MAXIMUM FIRST END IN |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 300-4644231 ITEM F3 | 3/2 Design control — primary reference U.S. Government activity |
| 16-00-1038 | 5/1 Secondary reference U.S. Government activity |
| 16-00-1049 | 5/9 Secondary reference U.S. Government activity |
| 300-4644231 | D/9 Drawing number reference only U.S. Government activity |
| ASTM-A234 GRB F | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4730-01-331-2859 is a Tee,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-331-2861. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-331-2859: Nominal Pipe Size Accommodated: 2.000 INCHES FIRST END IN; Nominal Pipe Size Accommodated: 2.000 INCHES THIRD END IN; Nominal Pipe Size Accommodated: 1.500 INCHES SECOND END IN; Connection Style: SOCKET (PIPE) FIRST END. 14 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.