a screw anchor, A fixing used to attach objects securely to a wall., an expansion anchor, An anchor with a metal sleeve that expands as the bolt is tightened., a chemical anchor, A type of anchor that uses adhesive to hold threaded studs in place., a threaded shaft, The long part of a screw with spiral threads., a head, The top part of a screw where a screwdriver is applied., screw into, To fix a screw by turning it into a material or threaded hole., a predrilled hole, A hole drilled before a screw is inserted., a wall plug, A plastic tube inserted into a wall before a screw is installed., expand, To become larger in size inside a hole., pullout forces, Forces that try to pull an anchor or plug out of a wall., set into, To fix something firmly in place, usually with adhesive., epoxy resin, A strong adhesive used to fix threaded studs into a wall.

Tools - Lesson 4 - Task 4

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