The Elbow,tube to Boss, cataloged under National Stock Number 4730-01-175-3878, 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 Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-175-3878 |
| Primary Part Number | 16C40X-S |
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Connection Style | FLARED (TUBE) FIRST END |
| Connection Style | DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Nominal Outside Diameter Tube Accommodated | 25.00 MILLIMETERS FIRST END MM |
| Leg Length | 52.0 MILLIMETERS NOMINAL SECOND END MM |
| Leg Length | 64.9 MILLIMETERS NOMINAL FIRST END MM |
| Nominal Thread Size | 1.312 INCHES FIRST END IN |
| Nominal Thread Size | 1.312 INCHES SECOND END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A SECOND END A |
| Thread Class | 2A FIRST END A |
| Thread Quantity Per Inch | 12 SECOND END |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL OVERALL |
| Thread Series Designator | UN FIRST END |
| Thread Series Designator | UN SECOND 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 |
|---|---|
| 16C40X-S PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA) |
| Reference | Meaning |
|---|---|
| 16C40X-S | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-175-3878 is a Elbow,tube to Boss, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-175-3878 has 1 manufacturer part number on file: 16C40X-S (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division).
Key specifications for 16C40X-S: Flow Angle: 90.0 DEGREES; Connection Style: FLARED (TUBE) FIRST END; Connection Style: DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END; Connection Type: THREADED EXTERNAL TUBE FIRST END. 19 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.