The Connecting Link,rigid, cataloged under National Stock Number 3040-00-606-4451, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-606-4451 |
| Item Name | Connecting Link,rigid |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Body Diameter | 0.375 INCHES NOMINAL IN |
| Body Construction | SOLID |
| Link Style | SOLID SHANK |
| End Attachment Hole Diameter | 0.312 INCHES NOMINAL SECOND END IN |
| End Attachment Hole Diameter | 0.375 INCHES NOMINAL FIRST END IN |
| End Attachment Width | 0.593 INCHES NOMINAL FIRST END IN |
| Surface Treatment | CADMIUM |
| End Attachment Length | 2.187 INCHES NOMINAL FIRST END IN |
| End Attachment Length | 2.884 INCHES NOMINAL SECOND END IN |
| Material | STEEL |
| End Attachment Fork Width | 0.718 INCHES NOMINAL 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 |
| Reference | Meaning |
|---|---|
| 980974 | 3/9 Design control — primary reference U.S. Government activity |
| 4253-111 | 5/9 Secondary reference U.S. Government activity |
| D11524-111A | 5/2 Secondary reference U.S. Government activity |
NSN 3040-00-606-4451 is a Connecting Link,rigid, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6640-01-468-3444. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-00-606-4451: Body Diameter: 0.375 INCHES NOMINAL IN; Body Construction: SOLID; Link Style: SOLID SHANK; Overall Length: 8.406 INCHES NOMINAL IN. 11 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.