The Elbow,hose to Boss, cataloged under National Stock Number 4730-01-677-3551, 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 Oshkosh Defense Llc. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-677-3551 |
| Primary Part Number | 3558115 |
| Item Name | Elbow,hose to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Nominal Width Across Flats | 0.750 INCHES SECOND END IN |
| Flow Angle | 90.0 DEGREES |
| Nominal Overall Length | 1.66 INCHES IN |
| Connection Type | THREADED EXTERNAL BOSS FIRST END |
| Connection Type | THREADED INTERNAL HOSE SECOND END |
| Style Designator | ELBOW |
| Operating Pressure | 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.66 INCHES NOMINAL FIRST END IN |
| Leg Length | 0.63 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Surface Treatment | ZINC OVERALL |
| Thread Quantity Per Inch | 20 ALL ENDS |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF 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 |
|---|---|
| 3558115 PRIMARY | Oshkosh Defense Llc (USA) |
NSN 4730-01-677-3551 is a Elbow,hose to Boss, manufactured by Oshkosh Defense Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-677-3551 has 1 manufacturer part number on file: 3558115 (Oshkosh Defense Llc).
Key specifications for 3558115: Nominal Width Across Flats: 0.750 INCHES SECOND END IN; Flow Angle: 90.0 DEGREES; Nominal Overall Length: 1.66 INCHES IN; Connection Type: THREADED EXTERNAL BOSS FIRST END. 14 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.