The MIL-DTL-38999 Series II connectors offer robust performance for demanding environments, with up to 128 contacts housed in a secure insert. Designed for extreme temperatures ranging from -65 °C to 200 °C, these connectors feature various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. Constructed with durable aluminum shells and plated with options like electroless nickel and cadmium finishes, they ensure long-lasting performance in harsh conditions. Compliance with RoHS regulations further enhances their environmental suitability. Suitable for military and industrial applications, these connectors meet the stringent requirements of MIL-DTL-38999 II specifications.