The FRF27-005NM-12 from Signal Microwave are 27 GHz Non-Magnetic Field-Replaceable SMA Connectors. They consist of standard 2 and 4-hole flange connectors with a rear socket for 12 mil pins. These connectors have phosphor bronze housing (gold-plated, no nickel), beryllium copper center contacts (gold-plated, no nickel), and an Ultem dielectric bead. They are ideal for cryogenic environments, superconductors, low PIM, quantum computing/sensing, and MRI applications.
