The Adapter,straight,flange to Flang, cataloged under National Stock Number 4730-01-491-4357, 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 Dante Valve Company. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-491-4357 |
| Primary Part Number | B2526C-SU2 |
| Item Name | Adapter,straight,flange to Flang |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| B2526C-SU2 PRIMARY | Dante Valve Company (USA) |
| 542-7479664 PIECE 1 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| B2526C-SU2 | 3/9 Design control — primary reference Danco Valve Company |
| 542-7479664 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-491-4357 is a Adapter,straight,flange to Flang, manufactured by Dante Valve Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-491-4357 has 2 manufacturer part numbers on file: B2526C-SU2 (Dante Valve Company), 542-7479664 PIECE 1 (Naval Sea Systems Command).
Key specifications for B2526C-SU2: Flange Shape: ROUND WITH HOLES ALL ENDS; Connection Type: FLANGE ALL ENDS; Special Features: MATERIAL: BRONZE ASTM B61; Part Name Assigned by Controlling Agency: ADAPTER, PRESSURE FUEL. 3 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.