MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, providing robust connectivity in harsh environments. With a wide operating temperature range from -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mounting options such as front wall, rear wall, jam nut, and box mount receptacles, they offer versatility in installation. The connectors, made of durable aluminum, come in 9 shell sizes and 52 insert arrangements, accommodating different needs. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Plating options include cadmium-free finishes for RoHS compliance, with variants like electroless nickel and olive drab cadmium for enhanced protection. Designed for military specification MIL-DTL-38999 II, these connectors guarantee reliable performance, with features like bayonet coupling and removable crimp contacts. Suitable for applications requiring high conductivity and environmental resistance, they are a dependable choice for critical operations.