Abstract: A fitting is provided for use in retaining a plurality of accessory members to a vertical modular structural unit of a telecommunications tower or electricity pylon. The unit has a plurality of vertical sides wherein each side has at least one side aperture. The fitting has a body; a body plate attached to the body and so-shaped as to be cooperable with a side of the unit and receivable in intimate engagement within the side aperture; attachments by which the fitting is attachable to the structure and the body plate is retained thereto receivable within the side aperture by retaining bolts; the body having at least one accessory, such as a guy rope, insulator, dish and platform-receiving aperture for retaining the accessory to the body. The shape of the apertures in each unit side which is complimentary with the body plate, provides a lighter, stronger and more efficacious modular unit and tower.

Abstract: A locked nut and bolt assembly for bolting a plurality of members one to another in tight abutment, the assembly having: a bolt having a head and a threaded body portion; a complementarily-threaded nut having a nut outside diameter received in locked engagement on the bolt; the plurality of members retained on the bolt between the head and the nut; a casing having—a first terminal portion defining an inwardly protruding retained portion defining a first aperture embracing the bolt body portion and the retained portion in abutment with and retained by the tightened nut; a second terminal portion defining an inwardly protruding covering portion defining a second aperture embracing the bolt body portion and the covering portion in covering close proximity to the nut as to prevent access to the nut by nut engaging and turning means to effect loosening thereof; and a body between the first and the second terminal portions and surrounding the nut in close proximity thereto as to define therebetween a receiving rece

Abstract: A fitting for use in retaining a plurality of accessory members to a vertical modular structural unit of a telecommunications tower, electricity pylon or like structure. The unit has a plurality of vertical sides wherein each side has at least one side aperture. The fitting has a body; a body plate attached to the body and so-shaped as to be cooperable with a side of the unit and receivable in intimate engagement within the side aperture; attachments by which the fitting is attachable to the structure and the body plate is retained thereto receivable within the side aperture by retaining bolts; the body having at least one accessory, such as a guy rope, insulator, dish and platform-receiving aperture for retaining the accessory to the body. The shape of the apertures in each unit side which is complimentary with the body plate, provides a lighter, stronger and more efficacious modular unit and tower.