The MS5015 MS3100A188S U.S. Military Standard Aviation Plug Connector is a rugged circular plug designed for demanding aerospace, defense, and rugged industrial applications. Built to U.S. military standards, it provides a reliable, integrity connection for power and signal needs in harsh operating environments. This connector combines a MILC5015 style approach with an MS3100A188S insert arrangement, delivering a durable solution for demanding wiring harnesses and equipment. Key benefits MILSPEC reliability for critical systems Designed to perform in aerospace, military, and rugged industrial settings where dependable connections are essential. Secure, mating compatibility Compatible with standard MS5015 and MS3100A188S mating parts, enabling straightforward integration into existing MILSPEC portfolios. Durable construction for harsh conditions Aluminum shell with protective finishes and copper alloy contacts provide long service life in challenging environments and resist corrosion. Versatile 18position insert Supports multiple circuits within a single plug, enabling efficient harness design and simplified routing. Field serviceability and maintenance Built to withstand frequent mating and unmating, with robust contacts and insulators designed for repeat use. Strong vibration and shock tolerance Engineered to maintain electrical integrity under vibration conditions typical of aviation and military applications. Key attributes Functionality Circular plug connector intended for power and signal transmission in MILSPEC installations with an 18position insert arrangement (MS3100A188S). Compatibility Complies with U.S. military standards and is compatible with standard MS5015 and MS3100A188S mating components. Size and configuration 18position insert configuration within the MS3100A188S format, suitable for compact yet capable wiring harness designs. Material and finish Aluminum shell with protective plating; contacts made from copper alloy with appropriate plating options; insulators designed for aerospacegrade performance. Performance and reliability Built for environments with exposure to vibration, temperature variations, and exposure to the elements; designed to preserve electrical performance over repeated cycles. Two to three use cases Aircraft wiring and avionics harnesses Use this plug to connect power and signal lines in cockpit, cabin, or airframe systems where MILSPEC compliance and reliability are required. Military ground support equipment and test benches Ideal for rugged connectors on field test setups, diagnostic rigs, and maintenance bays that demand durable, reproducible connections. Rugged industrial equipment and aerospace ground testing Suitable for vibration environments such as aircraft maintenance facilities, production test rigs, and portable defense instrumentation where consistent electrical connections are . Notes This connector is intended for use with compatible MS5015 and MS3100A188S mating hardware and corresponding contacts and insulators. It provides a robust, MILSPEC solution for applications requiring secure mechanical engagement and reliable electrical performance in challenging environments.