The Connecting Link,rigid, cataloged under National Stock Number 3040-01-258-7307, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Ara, Inc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-258-7307 |
| Primary Part Number | B3890-2 |
| Item Name | Connecting Link,rigid |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Ara, Inc |
| Status | ACTIVE |
| Body Diameter | 0.124 INCHES NOMINAL IN |
| Body Construction | SOLID |
| Link Style | RETAINING PIN HOLE TO EXTERNAL THREAD |
| 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 |
|---|---|
| B3890-2 PRIMARY | Ara, Inc (USA) |
| Reference | Meaning |
|---|---|
| B3890 | D/9 Drawing number reference only Ara, Inc |
NSN 3040-01-258-7307 is a Connecting Link,rigid, manufactured by Ara, Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-258-7307 has 1 manufacturer part number on file: B3890-2 (Ara, Inc).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-258-7308. Verify interchangeability with system specifications before substitution.
Key specifications for B3890-2: Body Diameter: 0.124 INCHES NOMINAL IN; Body Construction: SOLID; Link Style: RETAINING PIN HOLE TO EXTERNAL THREAD; Overall Length: 11.050 INCHES NOMINAL IN. 4 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.