The MIL-DTL-38999 Series II connectors feature up to 128 contacts sealed for harsh environments, with a wide operating temperature range of -65°C to 200°C. Available in various mounting styles like front/rear wall mount, jam nut, and box mount, these connectors offer versatility for diverse applications. Constructed with aluminum shells and plated in options like electroless nickel and cadmium, they ensure durability and reliable performance. Utilizing M39029 rear release crimp contacts, they come in different insert arrangements and contact sizes. With a mating type of bayonet and gold contact plating, they guarantee secure connections. RoHS compliant finishes are also available, making them suitable for environmentally conscious projects. Perfect for military and industrial use, these connectors boast a service rating of M and provide 500 mating cycles, meeting stringent quality standards for demanding environments.