The Adapter,straight,flange to Pipe, cataloged under National Stock Number 4730-01-434-7971, 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 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-434-7971 |
| Primary Part Number | 211033240 |
| Item Name | Adapter,straight,flange to Pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES SECOND END |
| Flange Face Design | PLAIN SECOND END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Bolt Circle Nominal Diameter | 4.375 INCHES SECOND END IN |
| Nominal Overall Length | 3.000 INCHES IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Bolt Hole Nominal Diameter | 0.438 INCHES SECOND END IN |
| Nominal Thread Size | 3.875 INCHES FIRST END IN |
| Nominal Outside Diameter | 5.000 INCHES SECOND END IN |
| Bolt Hole Quantity | 4 SECOND END |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | BUTTRESS FIRST END |
| Nominal Thickness | 0.250 INCHES SECOND END 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 |
|---|---|
| 211033240 PRIMARY | Naval Sea Systems Command (USA) |
| 801-6405354 FIND 74 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6405354 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-434-7971 is a Adapter,straight,flange to Pipe, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-434-7971 has 2 manufacturer part numbers on file: 211033240 (Naval Sea Systems Command), 801-6405354 FIND 74 (Naval Sea Systems Command).
5 possible matches (shared part number, not a government interchangeability claim): 4730-01-434-7972, 4820-01-435-0482, 3040-01-435-1423. Verify interchangeability with system specifications before substitution.
Key specifications for 211033240: Flange Shape: ROUND WITH HOLES SECOND END; Flange Face Design: PLAIN SECOND END; Connection Style: PLAIN (PIPE) FIRST END; Bolt Circle Nominal Diameter: 4.375 INCHES SECOND END 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.