The Coupling,shaft,rigid, cataloged under National Stock Number 3010-01-503-8688, 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 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3010-01-503-8688 |
| Primary Part Number | 596-7409648-18 |
| Item Name | Coupling,shaft,rigid |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Body 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 |
|---|---|
| 596-7409648-18 PRIMARY | Naval Sea Systems Command (USA) |
| 596-7409648-48 PRIMARY | Naval Sea Systems Command (USA) |
| 596-7409648-49 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| B831-9520-49 | 3/2 Design control — primary reference U.S. Government activity |
| B831-9520-48 | 3/2 Design control — primary reference U.S. Government activity |
| B831-9520-18 | 3/2 Design control — primary reference U.S. Government activity |
| 845-4687407 ASSY 125 | 5/2 Secondary reference U.S. Government activity |
| 2641-792-03 ASSY 125 | 5/2 Secondary reference U.S. Government activity |
NSN 3010-01-503-8688 is a Coupling,shaft,rigid, manufactured by Naval Sea Systems Command, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-503-8688 has 3 manufacturer part numbers on file: 596-7409648-18 (Naval Sea Systems Command), 596-7409648-48 (Naval Sea Systems Command), 596-7409648-49 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3010-01-671-4548. Verify interchangeability with system specifications before substitution.
Key specifications for 596-7409648-18: Body Material: STEEL; Special Features: FOR A 0.625 INCH SQUARE SHAFT IN; End Item Identification: SEAWOLF CLASS SSN. 1 specification is 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.