Skip To Content

Specifications


The Spicer Differential Pinion Shaft Nut EAT127588 from CCC PARTS (distributed through Wofford Truck Parts) is engineered for rigorous performance in heavy duty drivetrain applications. This lock nut is used to secure the differential pinion shaft within axle assemblies, locking the bearing preload and preventing axial movement under load. It features a fine M39 × 1.5 metric thread and wide 55-mm flats for socket engagement, allowing reliable torque application. Manufactured from high-strength hardened steel, it resists deformation and wear under vibration and high torque loads. The nut is fully compatible with Spicer / Eaton axle assemblies and is often used in truck, bus, and heavy equipment differentials. Precise machining and surface finishing ensure a consistent, tight tolerance fit to maintain torque retention and dependable performance over long duty cycles.



Weight
0.5997

Compatibility


Alternative Part Numbers

  • 127588
  • 2719-127588
  • 2719127588
  • 3918821
  • DS127588
  • EE22550
  • ETN127588
  • S-B025
  • SB025
  • SP 127588
  • SP127588
  • SPI-127588
  • SPI127588
  • ZBP0127588

Related Parts

Differential Bearing
Timken Part No: 663
$73.26 View Part
Differential Bearing
Timken Part No: LM603049
$17.89 View Part
Differential Bearing
Timken Part No: 497
$57.14 View Part
Differential Bearing
Timken Part No: JM207049
$59.34 View Part
Differential Bearing
Timken Part No: JM716649
$70.63 View Part
Differential Pinion Bearing
Timken Part No: 72225C
$95.54 View Part
Differential Pinion Bearing
Timken Part No: 72212C
$94.65 View Part
Differential Pinion Bearing
Timken Part No: 72218C
$99.26 View Part
Differential Pinion Race
Timken Part No: 72487
$47.95 View Part
Differential Race
Timken Part No: 493
$33.74 View Part
Differential Race
Timken Part No: JM511910
$26.54 View Part
Differential Race
Timken Part No: JM716610
$40.62 View Part

This website uses cookies to provide users the best possible experience. Learn more. Please also review our terms of use and terms of sale.