MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert that provides environmental sealing. With an operating temperature range of -65°C to 200°C, these connectors offer reliable performance in extreme conditions. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they meet the stringent requirements of military specifications. The connectors come in aluminum shells with plating options including electroless nickel and cadmium finishes. Utilizing M39029 rear release crimp contacts, they ensure secure and durable connections. With a straight plug design and EMI/RFI shielding, these connectors are ideal for aerospace, defense, and industrial applications.