The Manifold,air Line, cataloged under National Stock Number 4730-01-557-8427, 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 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-557-8427 |
| Primary Part Number | 551-6405703 ASSY 8-A-1 |
| Item Name | Manifold,air Line |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Outlet Connection Quantity | 4 |
| Inlet Connection Quantity | 1 |
| Operating Pressure | 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Inlet Valve | NOT PROVIDED |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| DF331255 ASSY 8-A-1 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 551-6405703 ASSY 8-A-1 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 211038888M | 5/9 Secondary reference U.S. Government activity |
| 19-29-0001F | 5/2 Secondary reference U.S. Government activity |
| 6405703 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-557-8427 is a Manifold,air Line, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-557-8427 has 2 manufacturer part numbers on file: DF331255 ASSY 8-A-1 (Huntington Ingalls Inc Div Newport News Shipbuilding), 551-6405703 ASSY 8-A-1 (Naval Sea Systems Command).
Key specifications for 551-6405703 ASSY 8-A-1: Outlet Connection Quantity: 4; Inlet Connection Quantity: 1; Operating Pressure: 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Inlet Valve: NOT PROVIDED. 5 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.