FASTENING ELEMENT ASSEMBLY

摘要

A fastening element assembly for insertion into a prepared borehole is made up of a tie bolt and an expanding wedge. The tie bolt has a C-shaped flange formed on its trailing end which projects radially and circumferentially from the tie bolt. The projecting ends of the flange form a guide for the expanding wedge as the wedge is driven into a borehole in converting the assembly from its unspread condition into locked engagement within the borehole. Preferably, the circumferential surface of the tie bolt and the expanding wedge each form part of a circle . In the unspread condition, the circumferential surfaces of the parts of the tie bolt and expanding wedge disposed in surface contact with one another, form a circle.