Wedge-locking fastener assembly with ring retainer for washer

A wedge action fastener assembly, comprising:

• a nut having a multi-sided wrench engaging head a threaded internal surface rotatable about an axis, the threaded internal surface on the nut having a continuous thread, a camming end face on a first side of the nut, and an integral pilot extending axially from said first side of the nut, the pilot having a retainer ring recess formed about said axis and disposed a predetermined axial distance from said camming end face;
• a flanged washer having an inner bore rotatably mounted on the pilot and capable of axial slidable motion with respect to the nut, the flanged washer having a second camming end face interengageable with the camming end face of the nut;
• the flanged washer having a head with a configuration corresponding to the multi-sided head of the nut whereby a wrench can be used to engage the heads of both the nut and the flanged washer to rotate then as a unit, the flanged washer having an annular flange and a third camming face formed on said annular flange;
• a second washer having a camming face slidably engageable with the third camming face of the flanged washer, and a workpiece engaging surface, the distance between the workpiece-engaging surface and the nut being greater than the length of the pilot;
• the second washer having a central opening rotatably slidably mounted on the pilot between the flanged washer and the retainer ring recess;
• and
• a retainer disposed in the retainer ring recess and engageable with the second washer to retain both the flanged washer and the second washer on the pilot, and permitting axial motion of the flanged washer and the second washer on the pilot with respect to the nut.