I have checked Edmund Optics, and they do not offer mounts for such small lenses. Also checked Thorlabs, Newport, laser2000, Qioptiq, and they also don't have such mounts off the shelf. There is a possibility to make a custom S Mount.
Wikipedia Lens mount page states that for small camera modules there are Mounts from M12x0.5 all the way down to M4.2x0.2 (1/7" sensors). For example, 1/7" 2.0mm F2.8 Megapixel M4.2x0.2 mount, but minimum order is 100pcs.
