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:

head_diameter = 18
nut_thread_outer_diameter = 9
facets = 6
outer_diameter = 14
countersink = 2
thread_step = 3
thread_outer_diameter = 14
thread_length = 20
step_shape_degrees = 45
nut_step_shape_degrees = 45
slot_width = 1
drive_type = socket
inner_diameter = 8
nut_diameter = 12
socket_depth = 3.5
slot_depth = 2
head_type = socket
non_thread_diameter = 0
drive_diameter = 8
wing_ratio = 1
texture = exclude
thickness = 2
resolution = 0.5
non_thread_length = 0
type = bolt
nut_thread_step = 2
nut_type = normal
socket_facets = 6
nut_height = 6
head_height = 8