The Coupling,shaft,rigid, cataloged under National Stock Number 3010-00-552-4840, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3010-00-552-4840 |
| Item Name | Coupling,shaft,rigid |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Status | ACTIVE |
| Spline Minor Diameter | 0.2910 INCHES MINIMUM AND 0.2950 INCHES MAXIMUM FIRST END IN |
| Spline Type | INVOLUTE FIRST END |
| Spline Length | 0.730 INCHES NOMINAL FIRST END IN |
| Material Document and Classification | 66 FED STD 1ST MATERIAL RESPONSE OR AISI/SAE 4340 ASSN STD 2ND MATERIAL RESPONSE |
| Spline Major Diameter | 0.3873 INCHES MINIMUM AND 0.3964 INCHES MAXIMUM BOTH ENDS IN |
| Bore Shape | SPLINED FIRST END |
| Spline Pressure Angle in Deg | 30.000 FIRST END |
| Spline Quantity | 8 FIRST END |
| Body Material | STEEL COMP 4340 |
| Unthreaded Hole Quantity | 2 |
| Hole Diameter | 0.1240 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 292122-7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3010-00-552-4840 is a Coupling,shaft,rigid, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6150-01-069-8610. Verify interchangeability with system specifications before substitution.
Key specifications for 3010-00-552-4840: Spline Minor Diameter: 0.2910 INCHES MINIMUM AND 0.2950 INCHES MAXIMUM FIRST END IN; Spline Type: INVOLUTE FIRST END; Spline Length: 0.730 INCHES NOMINAL FIRST END IN; Material Document and Classification: 66 FED STD 1ST MATERIAL RESPONSE OR AISI/SAE 4340 ASSN STD 2ND MATERIAL RESPONSE. 11 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.
NSN 3010-00-552-4840 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.