Body and Fittings: Brass per QQ-B-626, Alloy 360, ¨ö Hard Center Contact: Male: Brass per QQ-B-626, Alloy 360, ¨ö Hard Female: Beryllium Copper per QQ-C-530, Cond. HT. Outer Contact: Beryllium Copper per QQ-C-530, Cond. HT. Dielectric: Teflon per ASTMD1457 Gaskets: Silicone rubber per ZZ-R-765, Class 11, Grade 50 Resistor: 2W, Metal film attenuator Finish: Body and Fittings: Tarnish Resistant Center Contact: Gold plated per requirements of MIL-C-39012 Outer Contact: Tarnish Resistant Marking: Body: ¡°POMONA ELECTRONICS 4108-*¡±