SM20RR - M20.5 x 0.5 Retaining Ring for ø20 mm Lens Mounts

The SM20RR is a retaining ring designed for ø20 mm lens mounts, offering a secure and stable solution for your optical setup. Manufactured by Thorlabs, a trusted name in the field of optics, this retaining ring is crafted from high-quality aluminum and features a black anodized finish for durability and aesthetic appeal.

The SM20RR is compatible with various lens tubes, including LMR20(/M), AD20T, CPN20, and SM1AD20, providing flexibility in its application. It boasts a clear aperture of 17.3 mm, allowing for a wide range of optical components to be mounted. The ring features an M20.5 x 0.5 thread, ensuring a secure and tight fit.

This retaining ring is part of Thorlabs' extensive catalog of optical elements, and its detailed parameters, including its metric measurement system and circular optical shape, make it a versatile and reliable choice for your optical system. The SM20RR is available for purchase through the Thorlabs website, where you can find more detailed specifications, step files, and current stock status.