Omniball® Spring-Loaded Connectors Mill-Max Omniball® Spring-Loaded Connectors are designed for applications requiring multiple contact points in sliding or rotational orientations. The unique Omniball® spring-loaded contacts (spring-loaded pins in which the traditional plunger has been replaced by a gold-plated, brass ball), feature a rolling ball interface, enabling contact to be made between components in axial and non-axial alignments. These versatile connectors facilitate creative solutions for innovative interconnect arrangements while providing optimal electrical, mechanical, and structural reliability.