MIL-DTL-38999 Series II connectors, designed for harsh environments, feature up to 128 contacts in an insert and offer secure environmental sealing. With a wide operating temperature range of -65 °C to 200 °C, these connectors are reliable in extreme conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. The connectors, compliant with military specification MIL-DTL-38999 II, come in 9 shell sizes and 52 insert arrangements, accommodating different contact sizes. Their aluminum shells with plating options like cadmium and nickel ensure durability and performance. With features like bayonet coupling, removable crimp contacts, and a straight plug shell style, they provide efficient electrical connectivity for critical applications. Suitable for applications requiring high reliability and environmental resistance, these connectors meet stringent military standards for performance and durability.