The 10-123017-10G is a hexagonal nut designed for use with MIL-C-38999 LJT-R/JT-R Series I connectors, serving as a critical fastening component in military-specification circular connector assemblies. This nut is part of the MS27514 series cross-reference family and is identified by the Amphenol part number 10-123017-XXG variant designation. It is used in conjunction with connector receptacles and plugs to provide secure mechanical attachment and electrical continuity in demanding aerospace and military applications. The hexagonal nut design ensures reliable assembly and disassembly using standard tools, making it suitable for field maintenance and installation in harsh environments. Applications include aircraft wiring harnesses, military communication systems, and other defense-related equipment requiring MIL-C-38999 compliance.