The Nut,tube Coupling, cataloged under National Stock Number 4730-01-424-7395, 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 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-424-7395 |
| Primary Part Number | 1602AS229-1 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Shoulder Step Width | 0.288 INCHES NOMINAL IN |
| Shoulder Width | 0.125 INCHES NOMINAL IN |
| Thread Series | ACME |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.875 INCHES IN |
| Nut Diameter | 2.187 INCHES NOMINAL IN |
| Nut Height | 1.000 INCHES NOMINAL IN |
| Nut Style | ROUND |
| Thread Class | A2A |
| Thread Quantity Per Inch | 4 |
| Material | COPPER OVERALL |
| Fabrication Method | CAST |
| Smallest Inside Diameter | 1.320 INCHES NOMINAL IN |
| Nominal Tube Outside Diameter | 1.000 INCHES IN |
| Shoulder Seat Diameter | 1.875 INCHES NOMINAL 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 |
|---|---|
| 1602AS229-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1602AS229 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 4730-01-424-7395 is a Nut,tube Coupling, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-424-7395 has 1 manufacturer part number on file: 1602AS229-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1602AS229-1: Shoulder Step Width: 0.288 INCHES NOMINAL IN; Shoulder Width: 0.125 INCHES NOMINAL IN; Thread Series: ACME; Thread Direction: RIGHT-HAND. 15 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.