MIL-DTL-38999 Series I connectors offer exceptional durability and reliability for harsh environments, boasting up to 128 contacts housed in a sealed insert. With an impressive operating temperature range of -65 °C to 200 °C, these connectors are ideal for a wide variety of applications. Available in various configurations including front and rear wall mount receptacles, as well as jam nut receptacles, they feature RFI grounding plugs for added versatility. Compliant with military specification MIL-DTL-38999 I, these circular connectors come in nine shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells and offering multiple plating options such as cadmium and nickel, they ensure optimal performance in demanding settings. Suitable for RoHS compliant applications, these connectors guarantee efficient and secure electrical connections in critical environments.