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_resolution = 0.5
nut_step_shape_degrees = 45
thickness = 2
nut_thread_outer_diameter = 9
facets = 6
outer_diameter = 14
wing_ratio = 1
non_thread_length = 0
nut_height = 6.24
slot_depth = 2
countersink = 2
drive_diameter = 5
nut_diameter = 12.69
drive_type = socket
nut_type = normal
thread_length = 25
type = nut
resolution = 0.5
thread_outer_diameter = 8
nut_thread_step = 1.25
texture = exclude
head_diameter = 12
step_shape_degrees = 45
non_thread_diameter = 0
head_type = hex
thread_step = 2
head_height = 5
inner_diameter = 8
slot_width = 1