1. A second wrench used to hold a nut or bolt in place while tightening or loosening

2. A device used to secure or support objects by attaching them to a solid surface

3. A metal fastener with a threaded shank and a slotted head

4. Showing signs of corrosion, typically characterized by a reddish-brown color

5. Fitting or tightening a nut or bolt until it is comfortably secure

6. A cylindrical metal rod with threads on both ends, used to secure objects

6. A tool used for turning nuts and bolts, typically attached to a ratchet

7. A strong and durable metal often used to make nuts and bolts

8. The spiral ridges on the surface of a bolt or screw

8. Having spiral grooves or ridges, usually used to describe a fastener

9. A six-sided polygonal shape commonly used for nut and bolt heads

10. A handheld tool used for gripping and turning nuts and bolts

11. A nut designed to prevent loosening or unthreading due to vibrations

12. A permanent mechanical fastener consisting of a smooth cylindrical shaft and a formed head

13. A cylindrical piece of metal threaded at one end

14. The upper part of a bolt, screw, or fastener that is shaped for driving or turning

15. To release or undo a nut or bolt by turning it counterclockwise

16. A flat disk with a hole in the center, used to distribute the load of a threaded fastener

17. Having a gradually narrowing shape, often used to describe bolt or screw threads

18. The measure of rotational force used to tighten or loosen a nut or bolt