MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert with front and rear wall mount options. These connectors, meeting military specification MIL-DTL-38999 II, feature a wide operating temperature range from -65°C to 200°C. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for reliable connections. Constructed with aluminum shells and various plating options including cadmium-free finishes, they ensure durability and performance. With a straight plug design, gold contact plating, and bayonet coupling, they guarantee secure and efficient electrical connections in demanding applications.