The Flange,pipe, cataloged under National Stock Number 4730-01-183-5946, 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16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-183-5946 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Socket Diameter | 0.880 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN |
| Flange Diameter | 3.475 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 0.500 INCHES IN |
| Socket Depth | 0.380 INCHES NOMINAL IN |
| Flange Section Style | PLAIN FACE, SOCKET NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.620 INCHES NOMINAL IN |
| Neck Height | 0.180 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE |
| Specification/standard Data | 80204-ANSI B16.5 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Nondefinitive Spec/std Data | 9 TABLE AND 1/2 SIZE AND 80 SCHEDULE |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 2.380 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 0.440 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 |
| Reference | Meaning |
|---|---|
| B16.5 | 3/1 Design control — primary reference U.S. Government activity |
NSN 4730-01-183-5946 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-183-5946: Socket Diameter: 0.880 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN; Flange Diameter: 3.475 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 0.500 INCHES IN. 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.