Tool for Removing Broken Threaded Fasteners

摘要

A guide for drilling holes into broken threaded fasteners includes an application-specific template having surface features and holes situated to allow the template to be secured to the workpiece using remaining unbroken fasteners, and a drill guide that can be secured to the template and adjusted to lock into position over the broken fastener. The guide helps ensure that a drilling operation aligns with the center (and the centerline) of the broken fastener, so that the fragment can be removed with less risk of damage to the threaded hole.