The Reducer,pipe, cataloged under National Stock Number 4730-01-436-2136, 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 Sea Systems Command. Government technical data includes 8 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-436-2136 |
| Primary Part Number | 6397430 3.0 X 2.0 SW 70/30 |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 2.000 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 3.000 INCHES FIRST END IN |
| Connection Style | SOCKET (PIPE) ALL ENDS |
| Nominal Overall Length | 3.690 INCHES IN |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | COPPER ALLOY OVERALL |
| Reducer Type | CONCENTRIC |
| 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 |
|---|---|
| 6397430 3.0 X 2.0 SW REDUCER | Naval Sea Systems Command (USA) |
| 6397430 3.0 X 2.0 SW 70/30 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 803-6397430 3.0 X 2.0 SW REDUCER | 5/9 Secondary reference Naval Sea Systems Command |
| 803-6397430 3.0 X 2.0 SW 70/30 | 5/9 Secondary reference Naval Sea Systems Command |
| 6397430 | D/9 Drawing number reference only Naval Sea Systems Command |
| 6397430,3.0 X 2 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4730-01-436-2136 is a Reducer,pipe, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-436-2136 has 2 manufacturer part numbers on file: 6397430 3.0 X 2.0 SW REDUCER (Naval Sea Systems Command), 6397430 3.0 X 2.0 SW 70/30 (Naval Sea Systems Command).
Key specifications for 6397430 3.0 X 2.0 SW 70/30: Nominal Pipe Size Accommodated: 2.000 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 3.000 INCHES FIRST END IN; Connection Style: SOCKET (PIPE) ALL ENDS; Nominal Overall Length: 3.690 INCHES IN. 8 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.