The benefits of using an E-clip include the fact that it can be easily pressed into a machined groove without the use of a special tool (though it can be pushed onto or off of a shaft with the support of basic pliers or a screwdriver). It also does not require a circular shaft. Generally, these devices provide a functionally that’s superior compared to the other fasteners, eliminating the need for threading, tapping, or other machining operations. The three prongs of an E-ring make contact with the bottom of the groove, providing a shoulder for effective retention of assemblies. Unlike a snap ring, which must be slid along the axis of a shaft or rod for removal, an E-ring is easily removed from the side without any axis movement. The typical size of an E-clip is the maximum diameter of grooves for which the clip is designed. Other important dimensions are the throat width and the free diameter. The throat width is the size of the opening and the free diameter is the outermost diameter. These are both measured accurately when the ring clip in a relaxed state. These components are widely used in machinery, from simple hand tools to complex aircraft. They’re also commonly used in transit and railway systems because they offer the advantage of easy installation and removal. E-clips are available in several different materials, including copper, stainless steel, carbon steel, and alloy steel, depending on the necessity of corrosion-resistance for the application. Our E-Clips are made of high quality spring steel with a black oxide finish.