The Coupling,shaft,rigid, cataloged under National Stock Number 3010-01-088-5727, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Cummins Inc.. Government technical data includes 13 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 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 | 3010-01-088-5727 |
| Primary Part Number | 212639 |
| Item Name | Coupling,shaft,rigid |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| Spline Minor Diameter | 0.375 INCHES NOMINAL SECOND END IN |
| Spline Type | INVOLUTE SECOND END |
| Bore Length | 0.875 INCHES NOMINAL FIRST END IN |
| Overall Diameter | 0.748 INCHES MINIMUM AND 0.787 INCHES MAXIMUM IN |
| Spline Length | 0.582 INCHES NOMINAL SECOND END IN |
| Style Designator | PLAIN SLEEVE |
| Spline Major Diameter | 0.438 INCHES NOMINAL SECOND END IN |
| Bore Shape | STRAIGHT FIRST END |
| Bore Shape | SPLINED SECOND END |
| Spline Pressure Angle in Deg | 30.000 SECOND END |
| Spline Quantity | 13 SECOND END |
| Body Material | STEEL |
| Bore Diameter | 0.531 INCHES NOMINAL FIRST END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3010-01-088-5727 is a Coupling,shaft,rigid, manufactured by Cummins Inc., classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-088-5727 has 2 manufacturer part numbers on file: 212639 (Cummins Ltd), 212639 (Cummins Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6625-01-407-7488. Verify interchangeability with system specifications before substitution.
Key specifications for 212639: Spline Minor Diameter: 0.375 INCHES NOMINAL SECOND END IN; Spline Type: INVOLUTE SECOND END; Bore Length: 0.875 INCHES NOMINAL FIRST END IN; Overall Diameter: 0.748 INCHES MINIMUM AND 0.787 INCHES MAXIMUM IN. 13 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.