The Connecting Link,rigid, cataloged under National Stock Number 3040-00-034-6574, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-034-6574 |
| Primary Part Number | 53G970720-229 |
| Item Name | Connecting Link,rigid |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Body Construction | TUBULAR |
| Material Document and Classification | MIL-T-6736, TY1, COND N MIL SPEC SINGLE MATERIAL RESPONSE |
| End Attachment Hole Diameter | 0.656 INCHES NOMINAL FIRST END IN |
| End Attachment Width | 0.250 INCHES NOMINAL FIRST END IN |
| End Attachment Style | EYE FIRST END |
| Surface Treatment | CADMIUM |
| End Attachment Length | 5.560 INCHES NOMINAL FIRST END IN |
| Material | STEEL |
| 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 |
|---|---|
| 53G970720-229 | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company (USA) |
| 53G970720-229 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 53G970720 | D/9 Drawing number reference only The Boeing Company Div Defense |
| 53G970720-143 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 3040-00-034-6574 is a Connecting Link,rigid, manufactured by The Boeing Company Div Defense, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-034-6574 has 2 manufacturer part numbers on file: 53G970720-229 (Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company), 53G970720-229 (The Boeing Company Div Defense).
Key specifications for 53G970720-229: Body Construction: TUBULAR; Material Document and Classification: MIL-T-6736, TY1, COND N MIL SPEC SINGLE MATERIAL RESPONSE; End Attachment Hole Diameter: 0.656 INCHES NOMINAL FIRST END IN; End Attachment Width: 0.250 INCHES NOMINAL FIRST END IN. 8 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.