Very useful connector, made by Solitron Microwave, model SM2902-6007, SMA male straight plug to .141 diameter miniature semi-rigid hardline, solder on type. Great for all those small cables you need to make! Very handy for repair as well. 

 Please see my other items for more RF goodies and weird stuff. Remember, I gladly combine items to save you shipping costs, so ask before you pay. I ship worldwide!