Over the last 3 years (well, in-fact more than that) I have come to realise that there is an ongoing confusion about SMA connectors. I can appreciate where the confusion comes from and in these images below and attached Youtube video I try to explain the main 3 variants to be on the lookout for in SMA connectors. The images below are the same ones I used in the video.
Top 3 SMA Questions
May 5, 2019 | Coaxial Connectors