The Connecting Link,rigid, cataloged under National Stock Number 3040-01-588-7400, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Caterpillar Inc Div Caterpillar Defense (CAGE 11083); Amz Alabama Inc. (CAGE 076M6); Bae Systems Land & Armaments L.p. (CAGE 54786) |
| Parameter | Value |
|---|---|
| NSN | 3040-01-588-7400 |
| Primary Part Number | 6445639-01M1 |
| Item Name | Connecting Link,rigid |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| 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 |
|---|---|
| 6445639-01M1 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 6445639-01M1 | Amz Alabama Inc. (USA) |
| 6445639-01M1 PRIMARY | Bae Systems Land & Armaments L.p. (USA) |
| Reference | Meaning |
|---|---|
| 6445639-01M1 | 3/9 Design control — primary reference Bae Systems Survivability Systems Llc |
| 6445639 | D/9 Drawing number reference only Bae Systems Survivability Systems Llc |
NSN 3040-01-588-7400 is a Connecting Link,rigid, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-588-7400 has 3 manufacturer part numbers on file: 6445639-01M1 (Caterpillar Inc Div Caterpillar Defense), 6445639-01M1 (Amz Alabama Inc.), 6445639-01M1 (Bae Systems Land & Armaments L.p.).
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.