The Connecting Link,rigid, cataloged under National Stock Number 3040-00-121-7125, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-121-7125 |
| Item Name | Connecting Link,rigid |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Body Diameter | 0.250 INCHES NOMINAL IN |
| Body Construction | SOLID |
| Material Document and Classification | AISI 8620 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| End Attachment Hole Diameter | 0.187 INCHES NOMINAL BOTH ENDS IN |
| End Attachment Style | CLEVIS NO. 2 BOTH ENDS |
| Surface Treatment | CADMIUM ALLOY |
| End Attachment Length | 2.125 INCHES NOMINAL BOTH ENDS IN |
| Material | STEEL |
| End Attachment Fork Width | 0.500 INCHES NOMINAL BOTH ENDS 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 |
|---|---|
| 175250 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-121-7125 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): 6750-01-427-1814. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-00-121-7125: Body Diameter: 0.250 INCHES NOMINAL IN; Body Construction: SOLID; Material Document and Classification: AISI 8620 NATIONAL SPEC SINGLE MATERIAL RESPONSE; Overall Length: 10.125 INCHES NOMINAL IN. 9 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.