The Coupling,pipe, cataloged under National Stock Number 4730-01-449-4546, 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 Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-449-4546 |
| Primary Part Number | DAA7221D168-009 |
| Item Name | Coupling,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Nominal Overall Length | 3.280 INCHES IN |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | THREADED INTERNAL |
| Nominal Thread Size | 2.000 INCHES ALL ENDS IN |
| Material | STEEL COMP 304 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 |
| Part Number | Manufacturer |
|---|---|
| DAA7221D168-009 PRIMARY | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| Reference | Meaning |
|---|---|
| DAA7221D168 | D/9 Drawing number reference only Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
NSN 4730-01-449-4546 is a Coupling,pipe, manufactured by Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-449-4546 has 1 manufacturer part number on file: DAA7221D168-009 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
Key specifications for DAA7221D168-009: Connection Style: PLAIN (PIPE) ALL ENDS; Nominal Overall Length: 3.280 INCHES IN; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: THREADED INTERNAL. 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.