The Flange,pipe, cataloged under National Stock Number 4730-01-446-4144, 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 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-446-4144 |
| Primary Part Number | 803-5184193-4X-11 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange End Radius | 0.030 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 1.000 INCHES IN |
| Flange Section Style | PLAIN FACE, RAISED FACE (BLIND) |
| Style Designator | OVAL, ONE BOLT HOLE CIRCLE |
| Neck Height | 0.120 INCHES NOMINAL IN |
| Bolt Hole Quantity | 2 |
| Bolt Circle Diameter | 0.750 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 0.380 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 |
|---|---|
| 803-5184193-4X-11 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5184193 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-446-4144 is a Flange,pipe, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-446-4144 has 1 manufacturer part number on file: 803-5184193-4X-11 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-446-5094, 4820-01-446-5095. Verify interchangeability with system specifications before substitution.
Key specifications for 803-5184193-4X-11: Flange End Radius: 0.030 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 1.000 INCHES IN; Flange Section Style: PLAIN FACE, RAISED FACE (BLIND). 10 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.