The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range of -65 °C to 200 °C, these connectors ensure reliable performance in challenging conditions. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Featuring a range of plating options including cadmium-free finishes, these connectors meet RoHS compliance standards. Their durable aluminum shells and gold-plated contacts guarantee longevity and conductivity, making them ideal for military and industrial applications. The M39029 rear release crimp contacts, in sizes 22D, 22M, 22, 20, 16, and 12, offer versatility in contact arrangements. With a mating type of Bayonet and a keyway polarization of D, these connectors ensure secure and accurate connections. Whether for box or through bulkhead mounting receptacles, the MIL-DTL-38999 Series II connectors deliver exceptional performance and durability, making them a reliable choice for demanding environments.