SPLIT STUD RING ANCHORING DEVICE

摘要

A fastener assembly for installing valve devices and the like on one side of a mounting plate by bolts were the bolt holes are without threads and the opposite side of the mounting face is inaccessible for holding a bolt head or nut from turning. The fastener assembly includes at least one fastener plate and a minimum of two threaded bolts affixed thereto, so that the threaded portion of the bolts affixed thereto, so that the threaded portion of the bolts projects through bolt holes in the mounting plate. The at least one fastener plate may be a split ring. A retaining washer is threaded onto the projecting bolt threads to retain the fastener plate in place while the valve device is being installed onto the projecting bolt threads on which lock nuts are subsequently screwed to secure the installation. Tightening of the lock nuts without consequent rotation of the fastener plate bolts is achieved by reason of the torque imparted to one bolt being transferred via the fastener plate to the other bolt thereof, which is constrained from moving in an arcuate path by the hole in which it is disposed to thereby prevent rotation of the one bolt as the nut is screwed down.