A jack is usually referred to as the female half of the mating connector and the plug is usually referred to as the male half. A standard polarized SMA jack will have a female center contact surrounded by a barrel with external threads. The standard polarized SMA plug will have a male center contact supported by a coupling nut with internal threads. Reverse polarity is a variation which reverses the gender of the center contact, and therefore a reversed polarized SMA jack will have a male center pin and the reversed polarized plug will have a female center contact. Standard polarity SMA connectors are not intermateable with RP-SMA connectors. Depending on the application, a straight or right angle version is available. Right angle versions are ideal for applications with space restrictions.