Materials:

Body: Brass, Tarnish Resistant Plating, Center Contact – Gold Plated Beryllium Copper
Finish: Body, Lockwasher and Hex Nut – Tarnish Resistant
Center Contact: Gold Plated
Dielectric: PTFE
Marking: “Pomona 4159”

Ratings:

Nominal Impedance: 50 Ohms
Leakage Rate: Less than 10-7 cc/sec of tracer gas at one atmosphere