The Coupling Half,shaft, cataloged under National Stock Number 3010-00-391-4089, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 21 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3010-00-391-4089 |
| Item Name | Coupling Half,shaft |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Status | ACTIVE |
| Bore Length | 2.4310 INCHES MINIMUM AND 2.4410 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-890, SHIPS, CLASS C MIL SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 5.500 INCHES NOMINAL IN |
| Features Provided | KEYWAY AND COUNTERBORE |
| Bore Shape | STRAIGHT |
| Bore Diameter | 1.4995 INCHES MINIMUM AND 1.5005 INCHES MAXIMUM IN |
| 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 |
| Reference | Meaning |
|---|---|
| FSA18PC2 | 5/9 Secondary reference U.S. Government activity |
| ENN18-1PC1 | 5/9 Secondary reference U.S. Government activity |
| EN-18-3TT | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| EN18-6PC2 | 5/9 Secondary reference U.S. Government activity |
| ENE18PC2 | 5/9 Secondary reference U.S. Government activity |
| ENJ18PC2 | 5/9 Secondary reference U.S. Government activity |
| FSN18PC2 | 5/9 Secondary reference U.S. Government activity |
| EN18-5PC2 | 5/9 Secondary reference U.S. Government activity |
| ENN18-1CPC1 | 5/9 Secondary reference U.S. Government activity |
| ENC18PC2 | 5/9 Secondary reference U.S. Government activity |
| FS18-1PC2 | 5/9 Secondary reference U.S. Government activity |
| ENB18PC2 | 5/9 Secondary reference U.S. Government activity |
| EN8-3TT | 5/9 Secondary reference U.S. Government activity |
| 1FSN18F | 3/9 Design control — primary reference U.S. Government activity |
| ENN18PC1 | 5/9 Secondary reference U.S. Government activity |
| 1ENN18 | 5/9 Secondary reference U.S. Government activity |
| ENN18CPC1 | 5/9 Secondary reference U.S. Government activity |
| END18PC2 | 5/9 Secondary reference U.S. Government activity |
| FSC18PC2 | 5/9 Secondary reference U.S. Government activity |
| DPC2 | 5/9 Secondary reference U.S. Government activity |
NSN 3010-00-391-4089 is a Coupling Half,shaft, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5940-01-277-0532. Verify interchangeability with system specifications before substitution.
Key specifications for 3010-00-391-4089: Bore Length: 2.4310 INCHES MINIMUM AND 2.4410 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-890, SHIPS, CLASS C MIL SPEC SINGLE MATERIAL RESPONSE; Overall Length: 2.431 INCHES MINIMUM AND 2.441 INCHES MAXIMUM IN; Outside Diameter: 5.500 INCHES NOMINAL IN. 7 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.