MIL-DTL-38999 Series I connectors boast up to 128 contacts within an insert, providing robust environmental sealing for reliable performance in harsh conditions. With an impressive operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Featuring various mounting options, including front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. Utilizing M39029 rear release crimp contacts in multiple sizes, they ensure secure and efficient connectivity. Constructed with high-strength aluminum shells and available in different plating options, such as electroless nickel and cadmium-free finishes, these connectors meet stringent military specifications. Suitable for both box and through bulkhead mounting receptacle types, the MIL-DTL-38999 Series I connectors guarantee conductivity and ingress protection for optimal performance in rugged environments.