SM2 Retaining Ring for ø2" Lens Tubes and Mounts

The SM2 Retaining Ring, with the catalog number SM2RR, is a lens tube mount designed for compatibility with ø2" (50.8 mm) lens tubes and mounts. Manufactured by Thorlabs, a trusted brand known for its high-quality optical components, this retaining ring is crafted from aluminum and features a black anodized finish for durability and aesthetic appeal.

The SM2RR boasts a circular optical shape and a thickness of 2.5 mm, providing a secure and stable fit for your lens tubes. It is equipped with an SM2 thread, ensuring compatibility with SM2 series lens tubes. The clear aperture of this retaining ring measures 48.3 mm, providing ample space for light transmission while maintaining structural integrity.

This retaining ring is part of Thorlabs' extensive range of mount accessories, designed to enhance the functionality and performance of your optical setup. The SM2RR is available for purchase through the Thorlabs website, where you can find more detailed specifications, technical drawings, and current stock status.