Mil-Spec Retaining Rings for Precision and Reliability
Why Choose American Ring Mil-Spec Rings
American Ring Mil-Spec retaining rings are manufactured for applications where dimensional accuracy, material performance, and dependable retention are essential. Our extensive military and aerospace product offering includes multiple ring styles, materials, finishes, and sizes to support both new designs and replacement requirements.
Extensive Mil-Spec Selection
Choose from a broad range of military and aerospace retaining ring series, including MS, MIL-DTL, and AS specifications for internal, external, and spiral retaining applications.
Precision Manufacturing
American Ring manufactures retaining rings to exacting dimensional requirements for secure, reliable performance in demanding assemblies.
Materials & Finishes
Multiple material and finish combinations are available to meet application requirements involving strength, corrosion resistance, temperature, environment, and service conditions.
Get The F.A.Q.s
Military and aerospace retaining rings often have specific requirements for dimensions, materials, finishes, installation, and interchangeability. These frequently asked questions provide a quick introduction to Mil-Spec retaining rings and how American Ring can help identify the right part for your application.
Mil-Spec Rings F.A.Q.
American Ring’s Mil-Spec offering includes internal retaining rings for bores, external retaining rings for shafts, and spiral retaining rings for applications requiring a continuous retaining surface.
American Ring offers a wide range of military and aerospace retaining ring series, including MS16624 through MS16634, MS3215, MS3217, MS90707, MS90708, MIL-DTL-27426 spiral retaining rings, and AS3215 through AS3218.
Mil-Spec retaining rings are retaining components manufactured to military or aerospace specifications that define requirements such as dimensions, materials, finishes, and configuration. They are commonly used where consistent fit and reliable retention are critical.
Yes. Many military retaining ring part numbers correspond to American Ring commercial retaining ring sizes or series. American Ring can help identify the applicable part, material, finish, and commercial equivalent when available.
Yes. Depending on the specification and part number, Mil-Spec retaining rings may be available in multiple material and finish combinations to meet different environmental, corrosion-resistance, strength, and application requirements.
Find Your Mil-Spec Retaining Ring
American Ring offers thousands of military and aerospace retaining ring configurations across multiple specifications and product families. Browse by Mil-Spec series to review available part numbers, dimensions, materials, finishes, and applicable American Ring commercial equivalents.
MS Retaining Rings
Browse military standard retaining ring series for internal and external retaining applications, including the MS16624–MS16634, MS3215, MS3217, MS90707, and MS90708 families.
MIL-DTL-27426 Spiral Retaining Rings
Explore MIL-DTL-27426 spiral retaining rings for internal and external applications requiring a continuous retaining surface and dependable circumferential retention.
AS Aerospace Retaining Rings
Browse AS3215, AS3216, AS3217, and AS3218 aerospace retaining ring series for precision retaining applications.
Applications
American Ring Mil-Spec retaining rings are used in demanding applications where component retention, dimensional consistency, and dependable performance are essential.
Mil-Spec retaining rings are used throughout aircraft and aerospace systems to retain bearings, shafts, assemblies, actuators, control components, and other precision hardware.
Retaining rings provide compact, dependable component retention in military vehicles, support equipment, mechanical systems, and other equipment designed for demanding operating environments.
Mil-Spec retaining rings support applications in naval, marine, and shipboard systems where reliability and material selection are especially important.

Military retaining rings are used in assemblies where secure component positioning, precise fit, and reliable mechanical retention are critical to operation.

Precision retaining rings can be used in military communications, electronic, sensing, and control equipment to secure components while minimizing assembly space.
Contact American Ring
Need help finding a Mil-Spec retaining ring or identifying the American Ring equivalent for an existing military part number?
Our team can help you review specifications, dimensions, materials, finishes, and available part configurations to identify the right retaining ring for your application.