An RF connector is provided. The connector includes a first socket member. The first socket member includes a conductive sleeve and end cap. The conductive sleeve includes a top portion, a bottom portion, and a plurality of springs connecting the top portion and the bottom portion. A base inside the conductive sleeve includes a first matching hole configured to match to a first conductive pin of a first plug member. The end cap includes a base and a lip. In a first position, the top portion of the conductive sleeve contacts the base of the end cap and is partially enclosed by the lip of the end cap. The end cap prevents the removal of the conductive sleeve in the first position.