MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an insert. Designed for harsh environments, these circular receptacles are front wall mount, rear wall mount, and jam nut compatible. Featuring M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8. With a temperature range from -65 °C to 200 °C, they are ideal for demanding applications. The connectors come in 9 shell sizes and 52 insert arrangements, boasting various plating options including cadmium-free finishes. Their aluminum shells provide durability, while RoHS certification ensures environmental compliance. Suitable for military and industrial use, these connectors guarantee reliable performance in challenging conditions.