The document provides definitions for various mechanical parts and tools, including threaded fasteners like screws, bolts, and nuts that connect parts together using ridges on their exterior or interior surfaces. It also lists other hardware pieces like washers, clamps, springs, and electrical components as well as tools for working with these parts such as screwdrivers, wrenches, hammers, and drills. Spanish terms are provided for some items like clamps.

1. nail

2. head
thread: a helical
ridge on the outside
of a screw, bolt, etc.
or on the inside of a
cylindrical hole, to
allow two parts to be
screwed together.
screw

3. bolt

4. nut

5. U-bolts

6. washer

7. hook

8. E-clip

9. clamp
SPANISH: tornillo de sujeción, tornillo de banco, mordaza.

10. rope

11. spring

12. fuse

13. hose

14. plug

15. socket

16. switch

17. screwdriver

18. wrench

19. hammer

20. drill