The Connecting Link,rigid, cataloged under National Stock Number 3040-01-475-7378, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Tyee Aircraft Inc Div Tyee Aircraft. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Connecting Link,rigid |
| FSC / FSG | 3040 — Miscellaneous Power Transmission Equipment (FSG 30) |
| Manufacturers | Tyee Aircraft Inc Div Tyee Aircraft (CAGE 34742); Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (CAGE 76823); The Boeing Company Div Defense (CAGE 76301) |
| Parameter | Value |
|---|---|
| NSN | 3040-01-475-7378 |
| Primary Part Number | 6522-131 |
| Item Name | Connecting Link,rigid |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Tyee Aircraft Inc Div Tyee Aircraft |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 6522-131 PRIMARY | Tyee Aircraft Inc Div Tyee Aircraft (USA) |
| 74B428009-131 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 74B428009-131 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10153955 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74B428009 | 7/1 Vendor item drawing reference The Boeing Company Div Defense |
NSN 3040-01-475-7378 is a Connecting Link,rigid, manufactured by Tyee Aircraft Inc Div Tyee Aircraft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-475-7378 has 3 manufacturer part numbers on file: 6522-131 (Tyee Aircraft Inc Div Tyee Aircraft), 74B428009-131 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), 74B428009-131 (The Boeing Company Div Defense).
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 3040-01-475-7378 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.