MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts, boasting environmental sealing for rugged applications. Designed for harsh environments, these connectors feature various mounting options such as front and rear wall mounts, jam nuts, and box mounts. Available in aluminum shells with a range of plating options, including cadmium-free finishes, they ensure reliable operation in temperatures ranging from -65 °C to 200 °C. With 52 insert arrangements and M39029 rear release crimp contacts, they provide flexibility for diverse electrical setups. Meeting military specifications, these connectors guarantee durability, with a service rating of M and a mating life of 500 cycles. Suitable for potting applications, they offer secure and conductive pin connections.