The 122122 is a TNC crimp jack from Amphenol Connex, engineered for use with RG-58C/U cable. This connector features a durable nickel-plated brass body and housing, a gold-plated phosphor bronze contact pin, and a PTFE insulator. Assembly requires a .216" hex crimp for the ferrule and a .068" hex crimp for the contact pin. With its 7/16-28UNEF-2A threaded interface, the 122122 provides a secure and reliable connection for various RF applications.