Customized version of http://www.thingiverse.com/thing:193647

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=193647

Using the following options:

thread_step = 1
nut_type = normal
inner_diameter = 9
outer_diameter = 14
nut_thread_outer_diameter = 9
non_thread_length = 0
nut_height = 6
head_height = 2
type = bolt
thread_length = 15
countersink = 2
nut_resolution = 0.5
nut_step_shape_degrees = 45
resolution = 0.5
nut_diameter = 12
head_type = hex
thread_outer_diameter = 3
nut_thread_step = 2
non_thread_diameter = 0
head_diameter = 4
thickness = 2
socket_diameter = 5
step_shape_degrees = 45