An electrical connector interface has a male portion and a female portion. The male portion provided with at least three outer diameter radial projecting connector tabs and a conical outer diameter seat surface at an interface end. A lock ring provided with a stop shoulder and at least three radial inward coupling tabs at the interface end seats around the male portion, the stop shoulder abutting the connector tabs, a tab seat provided between the coupling tabs and the stop shoulder. The female portion provided with at least three outer diameter radial projecting base tabs and an annular groove open to the interface end with an outer sidewall dimensioned to mate with the conical outer diameter seat surface. The base tabs engage the coupling tabs when the lock ring is rotated to insert the base tabs into the tab seat, retaining the outer diameter seat surface against the outer sidewall.