Tutorial is continued
51. Press control & drag part6 as shown and place it at its position
52. Design Library>>ANSI Metric>>Nuts>>Hex Nuts
53. Drag Hex Nut into Graphics area & set the size M20
54. Place the nut as shown
55. Right Click at upper Bush >>Edit Part
56. Right Click at upper Bush >>Material>>Brass
57. Save the Assembly & all parts saves inside the assembly.