The Coupling,tube, cataloged under National Stock Number 4730-01-355-0451, 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 Legris Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-355-0451 |
| Primary Part Number | 3196-56-00 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Legris Inc |
| Status | ACTIVE |
| Connection Style | COMPRESSION (TUBE) SECOND END |
| Connection Style | SOCKET (TUBE) FIRST END |
| Seat Nominal Radius | 0.250 INCHES SECOND END IN |
| Nominal Overall Length | 1.437 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Style Designator | PLAIN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END BULKHEAD IN |
| Thread Class | 2A SECOND END A |
| Thread Class | 2A FIRST END BULKHEAD A |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNF SECOND END |
| Thread Series Designator | UNF FIRST END BULKHEAD |
| 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 |
|---|---|
| 3196-56-00 PRIMARY | Legris Inc (USA) |
| Reference | Meaning |
|---|---|
| A10051 | D/9 Drawing number reference only U.S. Government activity |
| A10051-001 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-355-0451 is a Coupling,tube, manufactured by Legris Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-355-0451 has 1 manufacturer part number on file: 3196-56-00 (Legris Inc).
Key specifications for 3196-56-00: Connection Style: COMPRESSION (TUBE) SECOND END; Connection Style: SOCKET (TUBE) FIRST END; Seat Nominal Radius: 0.250 INCHES SECOND END IN; Nominal Overall Length: 1.437 INCHES IN. 16 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.