The MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. These connectors, compliant with military specification MIL-DTL-38999 II, come in aluminum shells with a range of plating options including cadmium-free finishes. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors ensure reliable performance. Suitable for aerospace, defense, and other demanding applications, they provide a secure electrical connection with gold-plated removable crimp contacts.