MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an insert, designed for harsh environments. Featuring front and rear wall mount options, along with jam nut receptacles, these connectors ensure secure installations. The use of M39029 rear release crimp contacts guarantees reliable connections, while the variety of plating options, including cadmium-free finishes, cater to diverse application needs. With a wide operating temperature range from -65 °C to 200 °C, and high-strength aluminum shells, these connectors are ideal for demanding military and aerospace environments.