MIL-DTL-38999 Series II connectors feature up to 128 contacts, offering robust environmental sealing and a wide operating temperature range of -65 °C to 200 °C. This range includes harsh environment thin-walled connectors with various mounting options such as front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, they ensure reliable performance in demanding applications. Suitable for military and industrial use, these connectors are designed for longevity, with features like EMI/RFI shielding and removable crimp contacts.