Diameter of the smooth / threaded part

It is important to indicate the diameter of the smooth part in relation to the diameter of the threaded part.

Indicate the threaded part, for:

 

Pin bolts

clamping brackets

Special screws

Stud example

Smooth part diameter less than screw thread root diameter =

The nut can cross from one end to the other

Smooth part diameter greater than the thread root diameter of the screw =

The nut stops as soon as it reaches the smooth part