To open the lens mount assembly, click here: 
Open \samples\tutorial\toolbox\lens_mount.sldasm.
Click Toolbox, configure.
On the Smart Fasteners tab, under Fasteners to use with Hole Wizard holes:
For Ansi Inch, select Machine Screws in Type and Fillister Head in Fastener.
For Ansi Metric, select Hex Head in Type and Heavy Hex Bolt (B18.2.3.6M) in Fastener.
Under Fasteners to use with Non-Hole Wizard holes:
Select Ansi Inch in Hole Standard.
Select Countersunk Head in Type.
Select Elevator Bolt in Fastener.
Why did I
do this?