MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installations. These connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in different sizes. Constructed with aluminum shells and offering plating options such as cadmium-free finishes, they ensure durability and compliance with RoHS standards. Perfect for military and aerospace applications, these connectors provide reliable connectivity with gold-plated contacts and a mating type of bayonet coupling.