The Elbow,tube to Boss, cataloged under National Stock Number 4730-01-078-9859, 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 Cummins Inc.. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-078-9859 |
| Primary Part Number | 20384900 |
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 PREFORMED PACKING AND 1 FLAT WASHER |
| Flow Angle | 90.0 DEGREES |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | FLARED (TUBE) FIRST END |
| Connection Style | PLAIN (PIPE) INLET |
| Inlet Location | LEFT-HAND SIDE SINGLE INLET |
| Connection Type | THREADED INTERNAL PIPE INLET |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES FIRST END IN |
| Leg Length | 1.218 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Nominal Thread Size | 0.125 INCHES INLET IN |
| Nominal Thread Size | 0.875 INCHES FIRST END IN |
| Seat Angle | 45.0 DEGREES FIRST END |
| Thread Class | 2A ALL ENDS A |
| Material | STEEL OR COPPER ALLOY OVERALL |
| Thread Series Designator | NPT INLET |
| 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 |
|---|---|
| 20384900 PRIMARY | Cummins Inc. (USA) |
| Reference | Meaning |
|---|---|
| 203849 | 5/9 Secondary reference Cummins Inc. |
NSN 4730-01-078-9859 is a Elbow,tube to Boss, manufactured by Cummins Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-078-9859 has 1 manufacturer part number on file: 20384900 (Cummins Inc.).
Key specifications for 20384900: Furnished Items and Quantity: 1 PREFORMED PACKING AND 1 FLAT WASHER; Flow Angle: 90.0 DEGREES; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END; Connection Style: FLARED (TUBE) FIRST END. 18 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.