The Elbow,pipe, cataloged under National Stock Number 4730-00-403-1673, 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 Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-403-1673 |
| Primary Part Number | SS49TB833-4-18W |
| Item Name | Elbow,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Nominal Pipe Size Accommodated | 0.250 INCHES ALL ENDS IN |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Leg Length | 0.425 INCHES NOMINAL ALL ENDS IN |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Material | STEEL OVERALL |
| Thread Series Designator | NPT FIRST END |
| 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 |
|---|---|
| SS49TB833-4-18W | E O Manufacturing Company, Inc. (USA) |
| SS49TB833-4-18W | Airbus Deutschland Gmbh -Werk Bremen- (DEU) |
| SS49TB833-4-18W PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| 50N-6304L-SS | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| PE11404 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| SS49 | D/9 Drawing number reference only Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 4730-00-403-1673 is a Elbow,pipe, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-403-1673 has 3 manufacturer part numbers on file: SS49TB833-4-18W (E O Manufacturing Company, Inc.), SS49TB833-4-18W (Airbus Deutschland Gmbh -Werk Bremen-), SS49TB833-4-18W (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for SS49TB833-4-18W: Flow Angle: 90.0 DEGREES; Nominal Pipe Size Accommodated: 0.250 INCHES ALL ENDS IN; Connection Style: PLAIN (PIPE) ALL ENDS; Connection Type: THREADED EXTERNAL PIPE ALL ENDS. 8 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.