The Adapter,straight,flange to Tube, cataloged under National Stock Number 4730-01-204-8370, 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 The Boeing Company Div Defense. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-204-8370 |
| Primary Part Number | 74R585004-2001 |
| Item Name | Adapter,straight,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Flange Shape | ROUND SECOND END |
| Flange Face Design | RAISED STRAIGHT SECOND END |
| Connection Style | PLAIN (TUBE) FIRST END |
| Nominal Overall Length | 1.720 INCHES IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-A-225/6 COND 1 851 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 2.250 INCHES FIRST END IN |
| Nominal Thread Size | 2.750 INCHES FIRST END IN |
| Nominal Outside Diameter | 3.500 INCHES SECOND END IN |
| Thread Class | 3A FIRST END A |
| Thread Quantity Per Inch | 16 FIRST END |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | UN FIRST END |
| Raised Face Nominal Diameter | 2.838 INCHES SECOND END IN |
| Raised Face Nominal Height | 0.110 INCHES SECOND END IN |
| Nominal Thickness | 0.125 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 |
|---|---|
| 74R585004-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| 74R585004-2001 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| 74R585004 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 4730-01-204-8370 is a Adapter,straight,flange to Tube, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-204-8370 has 2 manufacturer part numbers on file: 74R585004-2001 (The Boeing Company Div Defense), 74R585004-2001 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems).
Key specifications for 74R585004-2001: Flange Shape: ROUND SECOND END; Flange Face Design: RAISED STRAIGHT SECOND END; Connection Style: PLAIN (TUBE) FIRST END; Nominal Overall Length: 1.720 INCHES IN. 17 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.