The item is still accelerated (the force of gravity is still there) even though it's being held stationary in relationship to the viewer. There is no jerk because the acceleration does not change.
Waht
The first number refers to the Size (diameter) - small screws are given the size designations of 0 through 12, then they move to actual inch sizes of 1/4" and up. The second number is the threads per inch.
A "0" size has an outside diameter of approximately .0595" so this is close to...