The Flange,pipe, cataloged under National Stock Number 4730-01-434-5499, 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 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-434-5499 |
| Primary Part Number | 211078354 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Diameter | 6.630 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Flange Section Style | PLAIN FACE, WELDING NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.625 INCHES NOMINAL IN |
| Neck Height | 2.000 INCHES NOMINAL IN |
| Bolt Hole Quantity | 6 |
| Bolt Circle Diameter | 3.875 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 0.500 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 211078354 PRIMARY | Naval Sea Systems Command (USA) |
| 801-6405354 FIND 106 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6405354 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-434-5499 is a Flange,pipe, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-434-5499 has 2 manufacturer part numbers on file: 211078354 (Naval Sea Systems Command), 801-6405354 FIND 106 (Naval Sea Systems Command).
6 possible matches (shared part number, not a government interchangeability claim): 4730-01-434-7971, 4730-01-434-7972, 4820-01-435-0482. Verify interchangeability with system specifications before substitution.
Key specifications for 211078354: Flange Diameter: 6.630 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Flange Section Style: PLAIN FACE, WELDING NECK; Style Designator: ROUND, ONE BOLT HOLE CIRCLE. 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.
NSN 4730-01-434-5499 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.