MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with a wide operating temperature range from -65°C to 200°C. The family includes front and rear wall mount, as well as jam nut receptacles and RFI grounding plugs in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they ensure secure connections with sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). Constructed with high-strength aluminum shells, these connectors offer various plating options, including RoHS-certified finishes like electroless nickel, ensuring durability and reliability in demanding applications.