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:

non_thread_length = 0
slot_depth = 2
slot_width = 1
head_height = 5
nut_step_shape_degrees = 45
drive_type = socket
nut_diameter = 35
nut_height = 18
facets = 6
head_type = hex
countersink = 2
drive_diameter = 5
inner_diameter = 8
thread_outer_diameter = 8
non_thread_diameter = 0
step_shape_degrees = 45
socket_facets = 6
texture = exclude
wing_ratio = 1
nut_thread_outer_diameter = 21
head_diameter = 12
nut_type = normal
outer_diameter = 14
thread_length = 25
socket_depth = 3.5
resolution = 0.5
type = nut
thickness = 2
thread_step = 2
nut_thread_step = 3