![]() Īnother tool for a stuck nut on a bolt, but not a screw, is a nut splitter. These flutes or grooves grip the rounded nut from the outside, rather than being driven into the hollowed out screw shaft and taking hold of it internally as a screw extractor would. This size is often non-standard for most drill sets, requiring a dedicated drill bit to be supplied with the kit.Ī tool analogous to a screw extractor, but for removing a seized or rounded off nut from a bolt, is a nut extractor, which has tapered, spiral flutes like a screw extractor, but located internally in the tool, not externally. These work well, but have the drawback of requiring the pilot hole to be drilled to a precise size. A further form is a parallel fluted extractor, with no taper at all and thus no wedging. Straight fluted extractors have less wedging effect than tapered screw extractors, so have less tendency to lock the screws into place. The nuts can then be turned with a wrench to remove the screw. The appropriate special nut is then attached to the end of the extractor. The EasyOut kit includes an alignment rod that prevents dirt from entering the piping system and heavy-duty removal tool with hex head at the bottom end. The extractor is then hammered into the hole with a brass hammer, because a steel hammer is more likely to cause the extractor to break. The screw is drilled out with the appropriate drill and drill bushing. Straight fluted extractors may come in a kit that also has associated drills, drill bushings, and special nuts, or be sold individually. The IRWIN HANSON Cobalt Alloy Steel Spiral Extractor and Drill Bit Set, 10 Piece, features an aggressive left-hand design for extra gripping power.
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