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:

nut_diameter = 12
thickness = 2
thread_outer_diameter = 8
type = bolt
head_type = hex
drive_diameter = 5
nut_thread_step = 2
resolution = 0.5
slot_width = 1
wing_ratio = 1
thread_step = 2
head_diameter = 12
nut_resolution = 0.5
head_height = 5
step_shape_degrees = 45
countersink = 2
non_thread_diameter = 0
texture = exclude
outer_diameter = 14
nut_thread_outer_diameter = 9
nut_height = 6
inner_diameter = 8
slot_depth = 2
drive_type = socket
facets = 6
non_thread_length = 0
nut_step_shape_degrees = 45
nut_type = normal
thread_length = 50