MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in connectivity solutions. The connectors come in aluminum shells with multiple plating options including cadmium-free finishes, ensuring reliable performance. With M39029 rear release crimp contacts in different sizes, they cater to diverse application needs. Meeting military specification MIL-DTL-38999 II, these circular plugs with gold contact plating are built for durability, with a straight plug design and EMI/RFI shielding. Suitable for demanding environments, they provide reliable connections with their conductive construction and environmental resistance.