The Adapter,straight,flange to Tube, cataloged under National Stock Number 4730-01-339-6749, 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 Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-339-6749 |
| Primary Part Number | 70307-82404-103 |
| Item Name | Adapter,straight,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Flange Shape | HEXAGON SECOND END |
| Nominal Width Across Flats | 0.500 INCHES SECOND END IN |
| Flange Face Design | PLAIN SECOND END |
| Nominal Overall Length | 1.531 INCHES IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED INTERNAL TUBE AND THREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-A-225/9 FED SPEC SINGLE MATERIAL RESPONSE AND QQ-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.750 INCHES AND 1.062 INCHES FIRST END IN |
| Thread Class | 3B AND 3A FIRST END A |
| Material | ALUMINUM ALLOY 7075 OVERALL |
| Thread Series Designator | UNF FIRST END |
| Nominal Thickness | 0.156 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 |
|---|---|
| 70307-82404-103 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| 70307-82404 | D/9 Drawing number reference only Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 4730-01-339-6749 is a Adapter,straight,flange to Tube, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-339-6749 has 1 manufacturer part number on file: 70307-82404-103 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-339-6751. Verify interchangeability with system specifications before substitution.
Key specifications for 70307-82404-103: Flange Shape: HEXAGON SECOND END; Nominal Width Across Flats: 0.500 INCHES SECOND END IN; Flange Face Design: PLAIN SECOND END; Nominal Overall Length: 1.531 INCHES IN. 12 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.