The Elbow,flange, cataloged under National Stock Number 4730-01-124-9998, 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 15 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-124-9998 |
| Primary Part Number | 74A586405-1007 |
| Item Name | Elbow,flange |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES ALL ENDS |
| Flow Angle | 58.0 DEGREES |
| Flange Face Design | PLAIN ALL ENDS |
| Nominal Length | 2.630 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Material Document and Classification | WW-T-700/6,COND 0 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Leg Length | 1.710 INCHES NOMINAL SECOND END IN |
| Leg Length | 2.630 INCHES NOMINAL FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.006 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| Nominal Width | 1.460 INCHES ALL ENDS IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.136 INCHES ALL ENDS IN |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Nominal Thickness | 2.012 INCHES FIRST END IN |
| Nominal Thickness | 2.272 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 |
|---|---|
| 74A586405-1007 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 74A586405-1001 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 74A586405-1007 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 74A586405 | D/9 Drawing number reference only The Boeing Company Div Defense |
| 74A586405-1001 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 4730-01-124-9998 is a Elbow,flange, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-124-9998 has 3 manufacturer part numbers on file: 74A586405-1007 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), 74A586405-1001 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), 74A586405-1007 (The Boeing Company Div Defense).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-214-8945. Verify interchangeability with system specifications before substitution.
Key specifications for 74A586405-1007: Flange Shape: RECTANGULAR WITH HOLES ALL ENDS; Flow Angle: 58.0 DEGREES; Flange Face Design: PLAIN ALL ENDS; Nominal Length: 2.630 INCHES ALL ENDS IN. 15 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.