Rings / Spiral Retaining Rings / MKM


Product Image


Part Data

  • Housing or Shaft Housing
  • Axial or Radial Axial
  • Dh mm 28.000 mm
  • Groove Diameter Dg 29.110 - 29.260 - mm
  • Groove Width W 1.070 - 1.150 - mm
  • Free Diameter Df 29.500 - 29.830 - mm
  • Section S 1.800 - 2.000 - mm
  • Thickness T 0.900 - 1.000 - mm
  • Interchange Mil Or Aero

Performance Data

  • Thrust Load Ring Safety Factor Of 3 Pr 26,225.000 N
  • Thrust Load Groove Safety Factor Of 2 Pg 9,596.000 N


  • Carbon Steel (SAE 1060-1090)
  • Special Material Grades
  • Stainless Steel AISI 302
  • Stainless Steel AISI 316


***For plated rings, add .002" (.05 mm) to the listed maximum thickness.

  • OIL - Oil over Steel, Carbon Steel



Internal, Medium Duty, Metric. These 2-turn rings provide 360° groove contact and are designed for applications with medium thrust loads.

Custom solutions

Can’t find what you’re looking for in an existing product, need a modified version of one of our standard parts, or simply aren’t sure what part you need?

Submit your custom specifications

Need help? Contact our Engineering team


CAD Models are provided for informational purposes only and may not represent the final part you receive.  Manufacturer assumes no responsibility for any such inconsistencies , and disclaims any liability to any party for any loss, damage, or disruption which may arise therefrom. Always contact Manufacturer for final measurements when specified in your design.


More than Parts. A True Partnership.

Our passion is creating the best rings, springs, and clamps. Our mission is to make your work a success. We are here for you.