The 121431-0087 (CA3106E20-29S-B-A240) is a CA Bayonet BLUE GENERATION circular connector featuring a straight plug with socket endbell, endbell with clamp and bushing, and 17 contacts in size 16 arrangement. The connector is rated for 22 A at +20°C with a contact resistance of 6 mO and operates across an ambient temperature range of -55°C to +125°C. It features hard silver plating on copper alloy contacts, an aluminum alloy shell with zinc nickel iridescent blue grey metallic conductive coating, and CR-elastomere insulator material, achieving IP67 and IP68 (1 bar pressure for 16 h) protection ratings. The connector supports a test voltage of 2000 Vrms, provides 500 hours of salt spray resistance, and withstands 500 mating cycles with a coupling torque of 9 Nm maximum closing and 0.7 Nm minimum opening. This connector is ideal for demanding aerospace, military, and industrial applications requiring robust environmental sealing and reliable high-current transmission.