A fastener is a machine element and a hardware device that mechanically joins or affixes two or more objects together. Here are some fasteners as represented in Technical drawings.
Note : the small sketch at the right bottom corner representing a truncated cone tells whether the french or the american convention was used to place the views.
Screw rod 
Fr : tige filetée
Tapped hole 
Fr : trou taraudé
Cotter pins 
This is more of a cartoon than an engineering drawing. Still, it might be useful.
Nuts and bolts 
Solid rivets 
See also: Fastener identification markings