to screw in something that needs to be screwed in the wall or anywere !
To screw screws'!
mafanta
There are several uses for a balll screw jack. Ball screw jack assemblies use small balls to roll between the nut and the lifting ball screw. It creates less friction and increases use life.
centrifugal
a hammernand a screw
For tightening and loosening screws.
A vice use a screw to open and close.
No, they are adequate for many uses.
It's only called a 5 screw if it has 5 screws
A lead screw is used to transfer circular motion into linear motion as the lead screw engages with a nut
A screw jack is just that, a big screw in a base. As the screw is screwed out, it raises whatever it is under. A scissor jack that is in most new cars uses a screw to pull the jack together which causes it to raise up.