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_type = normal
nut_step_shape_degrees = 45
nut_height = 4.5
resolution = 0.5
thread_length = 5
head_type = hex
wing_ratio = 1
thread_step = 2
slot_depth = 2
head_diameter = 12
nut_thread_step = 2
texture = exclude
drive_diameter = 5
inner_diameter = 8
thread_outer_diameter = 9.5
head_height = 4.5
non_thread_length = 15.3
facets = 6
type = nut
nut_diameter = 12
outer_diameter = 14
countersink = 2
nut_thread_outer_diameter = 10.3
socket_facets = 6
thickness = 2
step_shape_degrees = 45
drive_type = socket
non_thread_diameter = 0
slot_width = 1
socket_depth = 3.5