The Bushing,pipe, cataloged under National Stock Number 4730-01-178-0776, 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 10 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-178-0776 |
| Item Name | Bushing,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Internal Screw Thread Series Designator | NPT |
| Internal Thread Direction | RIGHT-HAND |
| Style Designator | OUTSIDE HEXAGON OR OCTAGON (PARTIAL OR FULL THREAD OPTIONAL) |
| External Screw Thread Series Designator | NPT |
| External Thread Size | 2-1/2-8 |
| Surface Treatment | ZINC |
| Internal Thread Size | 1-1/2-11-1/2 |
| Material | STEEL |
| Working Pressure and Service Type | 2000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL WATER AND 2000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL OIL AND 2000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL GAS AND 2000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL AIR LBS |
| External Thread Direction | RIGHT-HAND |
| 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 |
|---|---|
| MS14304 | 4/1 Identification reference U.S. Government activity |
| MS14304-2T4024 | 2/2 Government specification standardization U.S. Government activity |
| 2139-2000-PSI2-1/2X1-1/2 | 5/9 Secondary reference U.S. Government activity |
| ASME-B16.11 | 5/1 Secondary reference The American Society of Mechanical Engineers |
| 2139 | 5/9 Secondary reference U.S. Government activity |
| 45A071 | D/9 Drawing number reference only C Systems Llc Dba Craig Systems Dba Eastern Technologies |
| 45A071-P1 | 5/9 Secondary reference C Systems Llc Dba Craig Systems Dba Eastern Technologies |
NSN 4730-01-178-0776 is a Bushing,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): 4730-01-314-9303. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-178-0776: Internal Screw Thread Series Designator: NPT; Internal Thread Direction: RIGHT-HAND; Style Designator: OUTSIDE HEXAGON OR OCTAGON (PARTIAL OR FULL THREAD OPTIONAL); External Screw Thread Series Designator: NPT. 10 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.