The Coupling Assembly,tube,flexible, cataloged under National Stock Number 4730-01-431-2520, 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 Ondrives.us Corp. Dba Rino Mechanical Components Inc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-431-2520 |
| Primary Part Number | 500.25.2424 |
| Item Name | Coupling Assembly,tube,flexible |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Ondrives.us Corp. Dba Rino Mechanical Components Inc |
| Status | ACTIVE |
| Tube Outside Diameter for Which Designed | 1.000 INCHES NOMINAL IN |
| Style Designator | FLEXIBLE COUPLING ASSEMBLY |
| Outside Diameter | 1.000 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 500.25.2424 | Ondrives.us Corp. Dba Rino Mechanical Components Inc (USA) |
| 3113AS3107 | Barbier, Dominique M. (USA) |
| Reference | Meaning |
|---|---|
| 3113AS3107-3 | C/1 Advisory reference — outside the item-of-supply concept Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 3113AS3107 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| C034-1 | 3/9 Design control — primary reference W. M. Berg, Inc. |
| 3113AS3107-2 | C/1 Advisory reference — outside the item-of-supply concept Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 4730-01-431-2520 is a Coupling Assembly,tube,flexible, manufactured by Ondrives.us Corp. Dba Rino Mechanical Components Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-431-2520 has 2 manufacturer part numbers on file: 500.25.2424 (Ondrives.us Corp. Dba Rino Mechanical Components Inc), 3113AS3107 (Barbier, Dominique M.).
1 possible match (shared part number, not a government interchangeability claim): 5925-01-486-5496. Verify interchangeability with system specifications before substitution.
Key specifications for 500.25.2424: Tube Outside Diameter for Which Designed: 1.000 INCHES NOMINAL IN; Style Designator: FLEXIBLE COUPLING ASSEMBLY; Overall Length: 1.109 INCHES NOMINAL IN; Outside Diameter: 1.000 INCHES NOMINAL IN. 4 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.