499 Series 2.54mm Grid Target Connectors Mill-Max 499 Series 2.54mm Grid Target Connectors for spring-loaded assemblies can be used in place of SMT pads on a PCB as the mating surface for spring-loaded pins. Combining target connectors with spring-loaded connectors on opposing boards provides an easy and efficient solution for making connections between docking stations and devices or stacked boards. Mill-Max 499 Series 2.54mm Grid Target Connectors are offered in double-row strips with a large flat surface for making contact with Mill-Max standard 1.07mm diameter spring pin plungers.