The Coupling,shaft,rigid, cataloged under National Stock Number 3010-01-068-1540, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3010-01-068-1540 |
| Primary Part Number | 709-4684905 |
| Item Name | Coupling,shaft,rigid |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bore Length | 3.3800 INCHES NOMINAL FIRST END IN |
| Overall Diameter | 1.500 INCHES NOMINAL IN |
| Style Designator | PLAIN SLEEVE |
| Features Provided | KEYWAY |
| Bore Shape | STRAIGHT FIRST END |
| Body Material | STEEL CORROSION RESISTING |
| Unthreaded Hole Quantity | 2 |
| Bore Diameter | 0.7500 INCHES NOMINAL FIRST END IN |
| Hole Diameter | 0.1880 INCHES NOMINAL0.1880 INCHES NOMINAL IN |
| 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 |
|---|---|
| 709-4684905 PRIMARY | Naval Sea Systems Command (USA) |
| 709-4684905 ITEM 9 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 709-4684905 ITE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 3010-01-068-1540 is a Coupling,shaft,rigid, manufactured by Naval Sea Systems Command, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-068-1540 has 2 manufacturer part numbers on file: 709-4684905 (Naval Sea Systems Command), 709-4684905 ITEM 9 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 2520-01-068-5401. Verify interchangeability with system specifications before substitution.
Key specifications for 709-4684905: Bore Length: 3.3800 INCHES NOMINAL FIRST END IN; Overall Diameter: 1.500 INCHES NOMINAL IN; Style Designator: PLAIN SLEEVE; Overall Length: 3.380 INCHES NOMINAL3.380 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.