0+ (Unillustrated Parts)  
6+ Stud retainer  
7+ Fixing button  
8+ Lokut nut  
9+ Plain washer  
10+ Screw  
12+ Armrest mounting bracket  
13+ Armrest mounting bracket  
14+ Lokut nut  
15+ Lokut nut  

The part numbers in the assembly image below relate to the product number in the table. Clicking on the part number will open up the relevant part details.