The Flange,pipe, cataloged under National Stock Number 4730-01-397-2347, 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 Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-397-2347 |
| Primary Part Number | DF2070-148 FN 18 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Face Seating Surface Condition | MACHINED |
| Socket Depth | 0.515 INCHES NOMINAL IN |
| Flange Section Style | PLAIN FACE, SOCKET NECK |
| Style Designator | RECTANGULAR, WITH BOLT HOLES |
| Bolt Hole Diameter | 0.406 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763,CL 316 COND A FED SPEC SINGLE MATERIAL RESPONSE |
| Flange Length | 2.750 INCHES NOMINAL IN |
| Recess Diameter | 1.243 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Center to Center Distance Between Bolt Holes Along Length | 2.000 INCHES NOMINAL IN |
| Center to Center Distance Between Bolt Holes Along Width | 1.000 INCHES NOMINAL IN |
| Outside Edge to Bolt Hole Center Distance Along Length | 0.375 INCHES NOMINAL IN |
| Flange Width | 1.750 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Outside Edge to Bolt Hole Center Distance Along Width | 0.375 INCHES NOMINAL IN |
| Thickness | 1.380 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 |
|---|---|
| 585-4604854 FIND 18 | Naval Sea Systems Command (USA) |
| 211075744 | Naval Sea Systems Command (USA) |
| DF2070-148 FN 18 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 585-6404854 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-397-2347 is a Flange,pipe, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-397-2347 has 3 manufacturer part numbers on file: 585-4604854 FIND 18 (Naval Sea Systems Command), 211075744 (Naval Sea Systems Command), DF2070-148 FN 18 (Huntington Ingalls Inc Div Newport News Shipbuilding).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-399-7370, 3040-01-686-5240. Verify interchangeability with system specifications before substitution.
Key specifications for DF2070-148 FN 18: Face Seating Surface Condition: MACHINED; Socket Depth: 0.515 INCHES NOMINAL IN; Flange Section Style: PLAIN FACE, SOCKET NECK; Style Designator: RECTANGULAR, WITH BOLT HOLES. 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.