The interface dimensions for SMA connectors are listed in MIL-STD-348. The SMA connector employs a 1/4-inch diameter, 36-thread-per-inch threaded barrel. 

 

A standard-polarity SMA male connector has a center pin surrounded by the barrel with inside threads, and the standard SMA female connector has a center sleeve surrounded by a barrel with outside threads. There are also reverse-polarity ("RP") SMA connectors in which the pin and sleeve are swapped;  Browse an RP product for a fuller description.

 

Our high-quality SMA connectors are rated for up to 500 mating cycles, but to achieve this it is necessary to properly torque the connector when making the connection. Flats are available also provided on the cable side of the connector assembly so that a second wrench can be used to prevent it from rotating and damaging the joint to the cable.