321019 is a ring tongue wire terminal manufactured by TE Connectivity with a closed barrel design and straight receptacle style, intended for terminating regular wire in the 26-22 AWG range (0.12-0.402 mm). The terminal features a copper body with tin finish and yellow nylon insulation, rated for 300 VAC operation. It has a stud diameter of 3.68 mm (M3.5), an insulation diameter of 2.08 mm maximum, and a tongue material thickness of 0.46 mm, providing reliable electrical connection and mechanical stability. This terminal is commonly used in electrical harnesses, automotive wiring, and industrial control applications where secure ring-tongue connections are required, and it maintains full RoHS/ELV compliance for environmental standards.