The Flange,pipe, cataloged under National Stock Number 4730-01-236-6653, 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 Flowserve Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-236-6653 |
| Primary Part Number | SWF7182-1/2 IN |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Flowserve Inc |
| Status | ACTIVE |
| Socket Diameter | 0.875 INCHES NOMINAL IN |
| Flange Diameter | 3.500 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 0.500 INCHES IN |
| Socket Depth | 0.375 INCHES NOMINAL IN |
| Maximum Operating Temp and Media for Which Designed | 500.0 FAHRENHEIT ANY ACCEPTABLE DEGF |
| Flange Section Style | PLAIN FACE, SOCKET NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.500 INCHES NOMINAL IN |
| Neck Height | 0.187 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 2.375 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 0.438 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 |
|---|---|
| SWF7182-1/2 IN PRIMARY | Flowserve Inc (USA) |
| Reference | Meaning |
|---|---|
| MIL-F-18180D | 5/9 Secondary reference U.S. Government activity |
| M181801201B01 | 5/9 Secondary reference U.S. Government activity |
| ASME B16.5 | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
NSN 4730-01-236-6653 is a Flange,pipe, manufactured by Flowserve Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-236-6653 has 1 manufacturer part number on file: SWF7182-1/2 IN (Flowserve Inc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-236-6654. Verify interchangeability with system specifications before substitution.
Key specifications for SWF7182-1/2 IN: Socket Diameter: 0.875 INCHES NOMINAL IN; Flange Diameter: 3.500 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 0.500 INCHES IN. 14 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.