Abstract: A method of suspending a pipe rack assembly from one or more vertical threaded shafts without passing the assembly over the ends of the shafts utilizes vertically opposed U-shaped channel members each having a plurality of transverse slots extending transversely inward from opposite side walls which are placed laterally on the shafts then slidably received one on the other and secured in the overlapped position with threaded fasteners. The vertically spaced slots in the upper and lower channel members form a circular opening which surrounds the shaft. The assembled channels are supported on the shafts by split nut members having two separable internally threaded segments which encircle the shaft and are releasably joined together on the shafts as a single unit to engage the bottom surface of the lower channel member. The split nuts allow adjustment and leveling of the assembled channel members at the proper height.