The MIL-DTL-38999 Series II connectors offer robust performance in harsh environments, featuring up to 128 contacts in an insert. 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 and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. The connectors come in aluminum shells with multiple plating options, including cadmium-free finishes for RoHS compliance. Utilizing M39029 rear release crimp contacts, they ensure secure and reliable connections. Built to military specification MIL-DTL-38999 II, these circular connectors are designed for durability, with a service rating of M and a mating life of 500 cycles. Suitable for male pin contacts, they offer conductive performance with environmental resistance, making them essential for critical operations.