MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert and are designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors offer front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. Constructed with high-strength aluminum shells, they come with a choice of plating options, including cadmium-free finishes. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity in demanding applications. These circular connectors, meeting military specification MIL-DTL-38999 I, are ideal for use in environments requiring superior environmental sealing and durability.