MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for extreme conditions with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front and rear wall mounts, jam nut, and box mounts, these connectors ensure secure and reliable connections. With 52 insert arrangements and M39029 rear release crimp contacts, they offer versatility for different applications. Constructed with aluminum shells and plated with options like electroless nickel, they meet stringent military specifications for durability. The straight plug design with EMI/RFI shielding and gold-plated contacts guarantees optimal performance in demanding environments. With a service rating of II and RoHS compliant finishes, these connectors are ideal for critical military and aerospace applications.