Materials:

Body and Fittings: Brass per QQ-B-626, Alloy 360 ½ H. Tarnish resistant plating
Center Contact: Brass per QQ-B-626, Alloy 360 ½ H. Tarnish resistant plating
Outer Contact: Gold Plated Beryllium Copper per QQ-C-530, Cond. HT.
Dielectric: PTFE
Finish:
Body and Fittings: Non-tarnish
Outer and Center Contacts: Gold Flash per MIL-G-45204 over silver plate per QQ-S-365