MIL-DTL-38999 Series II connectors offer robust performance with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they feature various mounting options such as front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. The aluminum shells come with a choice of plating options, including cadmium-free finishes for RoHS compliance. With a wide operating temperature range from -65 °C to 200 °C, these connectors are ideal for demanding applications requiring reliable electrical connections in challenging conditions.