The MIL-DTL-38999 Series II connectors, featuring up to 128 contacts within an insert, are designed for harsh environments with a wide operating temperature range of -65°C to 200°C. These connectors, available in various styles like front/rear wall mount, jam nut, and box mount receptacles, offer versatility in installation. Constructed with durable aluminum shells and offering multiple plating options, including RoHS certified finishes, they ensure reliability in demanding applications. Utilizing M39029 rear release crimp contacts, these connectors guarantee secure connections. With a straight plug configuration and EMI/RFI shielding, they meet military specifications for performance and durability, making them ideal for aerospace, defense, and industrial applications.