The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-01-483-1019, 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 26 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-483-1019 |
| Primary Part Number | 551FX |
| Item Name | Adapter,straight,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Nominal Width Across Flats | 0.438 INCHES CENTER BULKHEAD IN |
| Connection Style | FLARED (TUBE) SECOND END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Nominal Length | 1.060 INCHES ALL ENDS IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.188 INCHES SECOND END IN |
| Nominal Overall Length | 1.060 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Thread Pitch Diameters | +0.3995 TO 0.4037 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.407 INCHES ALL ENDS IN |
| Seat Type | BEVELED |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Nominal Thread Size | 0.125 INCHES FIRST END IN |
| Seat Angle | 45.0 DEGREES ALL ENDS |
| Nominal Outside Diameter | 0.250 INCHES SECOND END IN |
| Nominal Outside Diameter | 0.125 INCHES FIRST END IN |
| Pipe Wall Thickness Designation for Which Designed | SCHEDULE STD FIRST END |
| Pipe Wall Thickness Designation for Which Designed | SCHEDULE STD SECOND END |
| Media for Which Designed | FUEL, MISSILE SINGLE RESPONSE |
| Thread Class | 2A SECOND END A |
| Thread Quantity Per Inch | 27 FIRST END |
| Thread Quantity Per Inch | 20 SECOND END |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPTF FIRST END |
| Thread Series Designator | UNF SECOND END |
| Nominal Thickness | 0.219 INCHES ALL ENDS IN |
| 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 |
|---|---|
| 551FX PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 551FX | 3/9 Design control — primary reference Oshkosh Corp |
| 08718501 | 5/9 Secondary reference Imperial |
NSN 4730-01-483-1019 is a Adapter,straight,pipe to Tube, manufactured by Oshkosh Defense Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-483-1019 has 1 manufacturer part number on file: 551FX (Oshkosh Defense Llc).
Key specifications for 551FX: Nominal Width Across Flats: 0.438 INCHES CENTER BULKHEAD IN; Connection Style: FLARED (TUBE) SECOND END; Connection Style: PLAIN (PIPE) FIRST END; Nominal Length: 1.060 INCHES ALL ENDS IN. 26 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.