Amphenol

Amphenol offers a very wide range of contacts for most MIL-Spec and many proprietary connector applications, which include the International Space Station, Fighter Aircraft, Battlefield Communication Networks, and Military Ground Vehicle.
Contacts Usage:
Coax Contacts - Designed for RF/Microwave and shielded wire applications both low frequency and matched impedance available
Concentric Twinax Contacts - shielded twisted pair of conductors designed for digital transmission systems data bus 1553 systems
Triax Contacts - designed for shielded wire applications
Quadrax and Differential Twinax contacts - Designed for Ethernet, Firewire, Fibrechannel and Gigabit Ethernet applications.