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SMA Female Feed-Through Bulkhead Coaxial Connector
SMA (Sub Miniature Version A) connectors are coaxial RF connectors developed in the 1960s as a minimal connector interface for coaxial cable with a screw type coupling mechanism. The connector has a 50 Ω impedance. The SMA connector consists of a 1/4"-36 thread. The male is equipped with a 0.312" (7.925 mm) hex nut and star washer.