The Coupling,pipe, cataloged under National Stock Number 4730-01-511-6541, 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 6 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-511-6541 |
| Item Name | Coupling,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 4.000 INCHES ALL ENDS IN |
| Nominal Length | 2.500 INCHES ALL ENDS IN |
| Style Designator | PLAIN W/CENTER GROOVE |
| Nominal Outside Diameter | 4.500 INCHES ALL ENDS IN |
| Material | ALUMINUM OVERALL |
| Nominal Thickness | 0.120 INCHES ALL ENDS IN |
| 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 |
|---|---|
| 41313D | 3/9 Design control — primary reference Allegheny Valve Co |
| 41313D | 5/9 Secondary reference Allegheny Valve & Coupling, Inc. Dba Allegheny Coupling Company |
NSN 4730-01-511-6541 is a Coupling,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-511-6541: Nominal Pipe Size Accommodated: 4.000 INCHES ALL ENDS IN; Nominal Length: 2.500 INCHES ALL ENDS IN; Style Designator: PLAIN W/CENTER GROOVE; Nominal Outside Diameter: 4.500 INCHES ALL ENDS IN. 6 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.