Lag Screws DIN 571 For fastening of wood structural elements and heavy structures to brick and concrete when used in combination with dowels. 

Hexagon head bolt DIN 933, GOST 7805-70 Class 5.8 Used for construction connections. 

Carriage bolt DIN 603, GOST 7802-81 Used to connect wooden elements with each other and wooden elements with metal 

Nut DIN 934, GOST 5927-70 Used for construction connections.