This is the Propeller Shaft Bolt M8*25 12,9 Class Hexagon 6 for the Tirsan Propeller shafts Product Codes: 24882 and 24884
Original bolts can't be used on those propeller shafts.
You will also need a self-locking nut Product Code: 20744
You can use this bolt on the standard propeller shaft on your Lada, it is stronger (12,9 Class compared to the 10,9 Original Lada)
You will need a 6mm Hexahon Key for the installation.