-Standard Fasteners such as DIN 933, DIN 931,DIN 6912,DIN 6921.
-Non standard Fasteners which their shapes are similar to standard or have a special shape and dimensions.
-Rivets, hollowed rivets, knurled rivets and so on.
-Pins and studs.
-Welding bolts, studs etc.
-Bushes and hollowed parts."