Fastener Superstore Blog

All About Retaining Rings

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At Fastener SuperStore, we carry nearly 200 Retaining Ring size, style and material options:

E Style Retaining Rings

Rounded on the outside, with a wide opening, E-Style Retaining Rings are installed vertically onto machined grooves on shafts. The three internal areas of the ring maintain contact with the shaft, holding the ring in place. They are sometimes referred to as E Clips.

We offer e-style retaining rings in steel with a black phos finish, and in stainless steel. Sizes range from .062" through 1.88". Spec sheets linked on each part page offer detailed measurements for each part.

External Style Retaining Rings
External Style Retaining Rings
External Style Retaining Rings feature a small opening on the circumference. The two ends at the opening are called lugs, and each contains a small hole to help with installation. These rings are often used to hold items on a shaft. The narrowness of the opening allows the ring to maintain nearly complete contact with the shaft to which it is attached.

We offer external style retaining rings in steel with a black phos finish, and in stainless steel. Sizes range from .250" through 3". Spec sheets linked on each part page offer detailed measurements for each part.

Internal Style Retaining Rings
Internal Style Retaining Rings
Internal Style Retaining Rings are similar to External Style, except that the lugs face the inner portion of the ring. They are often used to hold a round shaft inside a piece of equipment by creating outward tension. The holes in the lugs stay exposed so that a retaining ring tool can access them.

Our internal style retaining rings are available in steel with a black phos finish, and in stainless steel. Sizes range from .250" through 3". Spec sheets linked on each part page offer detailed measurements for each part.

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