The Retainer,coupling, cataloged under National Stock Number 4730-01-466-6040, 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 Hydraflow. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-466-6040 |
| Primary Part Number | 19R34-40A |
| Item Name | Retainer,coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Hydraflow |
| Status | ACTIVE |
| Outside Diameter | 2.880 INCHES MINIMUM AND 2.930 INCHES MAXIMUM IN |
| Inside Diameter | 2.786 INCHES MINIMUM AND 2.791 INCHES MAXIMUM 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 |
|---|---|
| 19R34-40A | Hydraflow (USA) |
| Reference | Meaning |
|---|---|
| 7D0501 | D/9 Drawing number reference only U.S. Government activity |
| 7D0501A40 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-466-6040 is a Retainer,coupling, manufactured by Hydraflow, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-466-6040 has 1 manufacturer part number on file: 19R34-40A (Hydraflow).
Key specifications for 19R34-40A: Outside Diameter: 2.880 INCHES MINIMUM AND 2.930 INCHES MAXIMUM IN; Inside Diameter: 2.786 INCHES MINIMUM AND 2.791 INCHES MAXIMUM IN; Special Features: WIDTH IS 1.059 IN,ACCOMODATING TUBE SIZE O.D. IS 2.500 IN IN; End Item Identification: C-17A AIRCRAFT A. 3 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.