The part number M80-4002042 represents a high-reliability 20-pin (2x10) vertical female connector with a 2.00mm pitch from Harwin's premier Datamate J-Tek series, designed for through-hole PCB mounting. Featuring gold-plated beryllium copper contacts and a secure jackscrew locking mechanism, it offers exceptional resistance to extreme vibration, mechanical shock, and temperatures ranging from -55°C to +125°C, making it a military-grade component widely used in demanding aerospace, UAV, and motorsport electronics to ensure uninterrupted signal integrity.