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_type = hex
nut_resolution = 0.3
thread_step = 2
step_shape_degrees = 45
slot_depth = 2
type = nut
nut_thread_outer_diameter = 1.6
head_diameter = 12
outer_diameter = 14
drive_type = socket
nut_type = normal
slot_width = 1
nut_diameter = 3
thickness = 2
resolution = 0.5
nut_step_shape_degrees = 45
drive_diameter = 5
texture = exclude
inner_diameter = 8
facets = 6
nut_thread_step = 0.35
countersink = 2
non_thread_diameter = 0
nut_height = 1.6
non_thread_length = 0
wing_ratio = 1
head_height = 5
thread_outer_diameter = 8
thread_length = 25