MIL-DTL-38999 Series II connectors feature up to 128 contacts, providing robust connectivity in harsh environments. With a wide operating temperature range of -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, they offer versatility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating different contact sizes for optimal performance. Constructed with aluminum shells and offering multiple plating options including gold, they ensure reliable conductivity and corrosion resistance. Meeting military specification MIL-DTL-38999, these circular plugs are designed for durability, with a contact mating life of 500 cycles. Suitable for environment-resistant wall and jam nut mounting receptacle and plug types, they provide secure and efficient electrical connections in critical settings.