Center Pin: A solid metal pin in the middle that carries the actual radio frequency (RF), video, or data signal.
Dielectric Insulator: A plastic or Teflon ring surrounding the center pin to isolate it from the outer shell and prevent short-circuits.
Bayonet Locking Ring: A spring-loaded metal sleeve with two protruding studs (lugs) that lock onto a female jack with a quick quarter-turn twist-and-lock motion.
Knurled Edge: A textured grip on the outer shell for easy handling when attaching or detaching.