MS16624 & MS16625 Mil-Spec Retaining Rings

MS16624 (External) | MS16625 (Internal) | DFARS Certified

Looking for MS16624 or MS16625 Mil-Spec Retaining Rings?

You’re in the right place. MF Supply stocks Mil-Spec retaining rings, MS16624 (external) and MS16625 (internal), built for consistent groove fit, secure retention, and repeatable assembly. These rings are commonly used to locate and retain bearings, bushings, gears, pulleys, and other components in tight-tolerance assemblies across aerospace, defense, and precision manufacturing, especially where vibration resistance and axial positioning are critical.

What We Offer:

• Product: Mil-Spec Retaining Rings
• Types: External (MS16624) & Internal (MS16625) Retaining Rings
• Standards: MS16624 & MS16625
• DFARS Certified
• Other Certifications: Full certifications available upon request.

Sizes and Materials Offered:

• Inch Sizes: 1/4 through 3/8
• Material: Steel & Stainless Steel
• Finish: Cadmium Yellow (for steel parts)

Why Choose Mil-Spec Retaining Rings?

Mil-Spec retaining rings are precision spring-steel style fasteners designed to retain components in a groove, commonly on shafts (external rings) or inside bores/housings (internal rings), to help prevent axial movement under vibration and load. Choosing MS16624 or MS16625 helps support standardized fit and interchangeability, while material selection lets you match the environment: cadmium yellow–finished steel for added corrosion protection where specified, or stainless steel for corrosion resistance in harsher conditions. With DFARS-certified sourcing and full certifications available upon request, these rings are a strong fit for compliance-driven builds and audit-ready programs.

Ready to Buy?

Scroll down to browse available product sizes, specs, and part numbers or use our search tool or filters to quickly find the exact product you need!

Add to cart and checkout online, or email us at [email protected] for custom quotes and bulk orders. Most popular sizes are in stock and ship within 24 hours.