MIL-DTL-38999 Series II connectors boast up to 128 contacts in an insert, offering robust environmental sealing and a wide operating temperature range of -65 °C to 200 °C. These harsh environment connectors come in various configurations such as front and rear wall mount, jam nut, and box mount receptacles, catering to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, they feature M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Crafted from durable aluminum, these connectors come with multiple plating options, including cadmium-free finishes, meeting RoHS certification standards. Ideal for military applications, these connectors guarantee reliable performance with features like EMI/RFI shielding, gold contact plating, and a service life of 500 cycles, making them a preferred choice for demanding environments.