Specifies the head parameters of the Boss feature for a countersink style of fastener.
Access
Ribbon: 3D Model tab 
Plastic Part panel Boss 
, and click the Head tab.
Countersink angle
Wall thickness
Shank height
Clamp height
Head diameter
Shank diameter
Clamp diameter
Draft options
Outer draft angle
Inner draft angle
Shank draft angle
Clamp draft angle
