You are talking about F-connector series https://www.farnell.com/datasheets/318108.pdf You should be able to easily indentify the required connector type (plug, socket) at the catalog distributor or electronics DIY shop of your choice. I get them even at the hardware store next door.
Pay attention for coaxial cable type and consequently F-Type connector..
Choose your connector regarding to your cable type that can be either RG-59 or RG-6..
And don't forget that cheap nickel plated F-Type connectors ( especially Made in China with Noname brand ) have very bad reflection coefficients..typ. -7,-8 dB
Seek the internet to find high quality ones.. for instance Amphenol or Bomer Interconnect..