The Flange,pipe, cataloged under National Stock Number 4730-01-137-9243, 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 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-137-9243 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 2.000 INCHES IN |
| Flange Section Style | PLAIN FACE |
| Style Designator | RECTANGULAR, WITH BOLT HOLES |
| Bolt Hole Diameter | 0.531 INCHES NOMINAL IN |
| Flange Length | 4.000 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Center to Center Distance Between Bolt Holes Along Length | 3.060 INCHES NOMINAL IN |
| Center to Center Distance Between Bolt Holes Along Width | 1.690 INCHES NOMINAL IN |
| Outside Edge to Bolt Hole Center Distance Along Length | 1.060 INCHES NOMINAL IN |
| Flange Width | 3.810 INCHES NOMINAL IN |
| Material | STEEL |
| Outside Edge to Bolt Hole Center Distance Along Width | 0.470 INCHES NOMINAL IN |
| Thickness | 0.060 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 |
|---|---|
| 32CP | 5/9 Secondary reference Anchor Swan Corp Sub of Amerace Corp |
| 32CP | 3/9 Design control — primary reference Contitech Usa, Inc. |
NSN 4730-01-137-9243 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5935-01-221-5855. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-137-9243: Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 2.000 INCHES IN; Flange Section Style: PLAIN FACE; Style Designator: RECTANGULAR, WITH BOLT HOLES. 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.