The Flange,pipe, cataloged under National Stock Number 4730-01-159-5839, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-159-5839 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Diameter | 4.620 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 0.750 INCHES IN |
| Flange Section Style | RAISED AND RECESSED FACE, RAISED NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.750 INCHES NOMINAL IN |
| Neck Height | 0.380 INCHES NOMINAL IN |
| Material Document and Classification | ASTMA182,GRADEF11 ASSN STD SINGLE MATERIAL RESPONSE |
| Recess Depth | 0.440 INCHES NOMINAL IN |
| Specification/standard Data | 81349-MIL-F-18180 GOVERNMENT SPECIFICATION |
| Recess Diameter | 1.090 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 3.250 INCHES NOMINAL IN |
| Raised Face Diameter | 1.880 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 0.620 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| M18180/2-22A09D | 2/2 Government specification standardization U.S. Government activity |
| MIL-F-18180 | 4/1 Identification reference U.S. Government activity |
| H-2911 PIECE 21 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 4730-01-159-5839 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-159-5839: Flange Diameter: 4.620 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 0.750 INCHES IN; Flange Section Style: RAISED AND RECESSED FACE, RAISED NECK. 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.