The Coupling,pipe, cataloged under National Stock Number 4730-01-732-4549, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Merit Brass Co. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-732-4549 |
| Primary Part Number | M411-40 |
| Item Name | Coupling,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Merit Brass Co |
| Status | ACTIVE |
| Nominal Overall Length | 2.840 INCHES IN |
| Connection Type | THREADED INTERNAL PIPE BOTH ENDS |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM OVERALL LBS |
| Nominal Thread Size | 2.500 INCHES BOTH ENDS IN |
| Nominal Outside Diameter | 3.310 INCHES OVERALL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | NPT BOTH ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| M411-40 PRIMARY | Merit Brass Co (USA) |
| Reference | Meaning |
|---|---|
| 1110700743 | 7/2 Vendor item drawing reference Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army |
NSN 4730-01-732-4549 is a Coupling,pipe, manufactured by Merit Brass Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-732-4549 has 1 manufacturer part number on file: M411-40 (Merit Brass Co).
Key specifications for M411-40: Nominal Overall Length: 2.840 INCHES IN; Connection Type: THREADED INTERNAL PIPE BOTH ENDS; Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM OVERALL LBS; Nominal Thread Size: 2.500 INCHES BOTH ENDS IN. 7 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.