MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering robust environmental sealing for harsh conditions. With an operating temperature range from -65 °C to 200 °C, they provide reliable connectivity in demanding environments. Available in various configurations including front and rear wall mount receptacles, as well as jam nut receptacles, this connector family caters to diverse applications. Utilizing M39029 rear release crimp contacts, they ensure secure connections. The high strength aluminum shells come in multiple plating options such as cadmium, nickel, and anodized finishes, meeting different environmental requirements. These circular connectors, compliant with MIL-DTL-38999 I military specifications, guarantee performance and durability in critical operations.