The high performance LEMO M Series Harsh Environment Connector provides a ratchet locking, screw coupling system that enables a quick and secure coupling of the connectors for high vibration environments. When mated, the LEMO M series connectors are watertight to two meters for fifteen hours, achieving an IP68 rating. Plugs come with two grip designs: a standard knurl grip or an arctic grip to allow secure mating while wearing gloves. Receptacle styles include jam-nut or flange panel mount with crimp contacts, PCB pins, or in-line cable mount shells. The LEMO M series Harsh Environment Ratchet Coupling Connector family provides full 360° shielding and high shell conductivity to ensure excellent EMI protection. The over-mold feature provides additional strain relief ensuring cable mount reliability. LEMO's M series is designed for energy, alternative energy, industrial automation, performance automotive, and other harsh environment applications that require robust performance in a lightweight and compact size.