The Elbow,pipe to Tube, cataloged under National Stock Number 4730-01-258-5439, 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 Swagelok Co. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-258-5439 |
| Primary Part Number | SS-4-VCO-2-4 |
| Item Name | Elbow,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 PREFORMED PACKING |
| Connection Style | PLAIN (TUBE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Nominal Outside Diameter Tube Accommodated | 0.5625 INCHES FIRST END IN |
| Leg Length | 1.000 INCHES NOMINAL SECOND END IN |
| Leg Length | 0.859 INCHES NOMINAL FIRST END IN |
| Reduced Passage Nominal Inside Diameter | 0.188 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Nominal Thread Size | 0.5625 INCHES FIRST END IN |
| Thread Class | 2A FIRST END A |
| Material | STEEL COMP 316 BODY |
| Material | RUBBER SYNTHETIC SEAT |
| Thread Series Designator | NPT SECOND END |
| Thread Series Designator | UNF FIRST END |
| 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 |
|---|---|
| SS-4-VCO-2-4 PRIMARY | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| 7055881 FIND 49 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| SS-4-VCO-2-4 | 5/9 Secondary reference Cajon Co |
NSN 4730-01-258-5439 is a Elbow,pipe to Tube, manufactured by Swagelok Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-258-5439 has 1 manufacturer part number on file: SS-4-VCO-2-4 (Swagelok Co).
Key specifications for SS-4-VCO-2-4: Furnished Items and Quantity: 1 PREFORMED PACKING; Connection Style: PLAIN (TUBE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END; Connection Type: THREADED EXTERNAL PIPE SECOND END. 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.