Allen key
Crowfoot spanner
Screw driver
Box spanner
Millimeter thread
ISO metric thread
Square thread
None of these
20
12
17
18
Lead is twice the pitch
Pitch is twice the lead
There are two threads at the start and one thread thereafter
None of the above
Bolt A has higher yield strength than Bolt B
Bolt A has higher load-carrying capacity than Bolt B
All of the above