Abstract: A fastener assembly having a bolt having a shaft with a plurality of spaced elongated closed end splines spaced from a like plurality of open ended splines. Each pair of splines are interconnected by a crossover slot of the same or greater depth than the closed end and open ended splines. The entry into the crossover slots is wide enough for ears of a retaining ring that is inserted onto the open ended splines of the bolt shaft to pass through the crossover slots and be forced out of a restricted width exit leading from the crossover slot to the closed end spline thereby trapping the ring on the bolt shaft with the ears reciprocating in the closed end splines.