The MIL-DTL-38999 Series II connectors offer exceptional performance in harsh environments, featuring up to 128 contacts within a sealed insert. With an operating temperature range from -65 °C to 200 °C, they ensure reliable connectivity in extreme conditions. These connectors come in various configurations, including front and rear wall mounts, jam nut, and box mounts, catering to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, they accommodate M39029 rear release crimp contacts, providing flexibility for different applications. Constructed with aluminum shells and offering plating options like electroless nickel and cadmium finishes, they meet stringent military specifications. RoHS compliant options are also available, making them environmentally friendly. With features like bayonet coupling, gold-plated removable crimp contacts, and a conductive design, these connectors guarantee durability and performance, with a service life of 500 cycles. Suitable for demanding environments, they provide reliable connectivity for critical operations.