MIL-DTL-38999 Series II connectors feature up to 128 contacts housed in 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. Offering various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options like electroless nickel and cadmium finishes, they ensure durability and corrosion resistance. With a contact plating of gold and a mating type of bayonet, these connectors are designed for high-performance connectivity and longevity. RoHS compliant options are also available, making them suitable for environmentally conscious projects. Suitable for military and industrial use, these connectors are a reliable choice for critical applications.