What is this called?
Screw
What are these called?
Nails
What´s this called?
nut
What´s this called?
Bolt
What´s this part of the screw called?
Head
What are these called?
Anchors
Do bolts have a tip?
No, they don't
What´s this called?
Thread
What´s this called?
Clamp
What are these called?
Washers
Do nails have threads?
No, they don't
What are the main parts of a screw?
Head, shank, threads and tip