The Tee,pipe, cataloged under National Stock Number 4730-01-078-9005, 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 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-078-9005 |
| Item Name | Tee,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Leg Length | 2.250 INCHES NOMINAL SECOND END IN |
| Leg Length | 2.250 INCHES NOMINAL FIRST END IN |
| Leg Length | 2.160 INCHES NOMINAL THIRD END IN |
| Nominal Thread Size | 2.000 INCHES FIRST END IN |
| Nominal Thread Size | 2.000 INCHES THIRD END IN |
| Nominal Thread Size | 1.500 INCHES SECOND END IN |
| Specification/standard Data | 81348-WW-P-521 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | 1 TYPE |
| Material | IRON OVERALL |
| Thread Series Designator | NPT 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 |
| Reference | Meaning |
|---|---|
| WW-P-521 | 4/1 Identification reference U.S. Government activity |
| 13218E0055-72 | 3/2 Design control — primary reference U.S. Government activity |
| 13218E0055 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-078-9005 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): 4730-01-087-9418. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-078-9005: Connection Style: PLAIN (PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Leg Length: 2.250 INCHES NOMINAL SECOND END IN; Leg Length: 2.250 INCHES NOMINAL FIRST END IN. 12 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.