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 configurations including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. The connectors, compliant with military specification MIL-DTL-38999 II, come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and offering plating options such as cadmium and nickel, they ensure durability and reliability. With gold-plated contacts and a bayonet coupling mechanism, they provide secure electrical connections. Suitable for demanding environments, these connectors are ideal for military and aerospace applications.