The SM1A9TS thread-to-thread adapter contains an internal SM1 (1.035"-40) thread and an external C-Mount (1.00"-32) thread. Constructed of black Delrin, it is machined with the two threads connected by a flange and can be placed at the end of a threaded tube. This adapter is useful in situations where heat transfer between components could be a problem, such as camera sensors, whose noise increases with temperature. It is typically used to make ea camera lens with an SM1 lens tube. The unpackaged weight of this adapter is 2.27 g.