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:

drive_type = socket
nut_step_shape_degrees = 45
nut_height = 6
countersink = 2
thread_length = 25
drive_diameter = 5
nut_diameter = 12
nut_type = normal
nut_thread_outer_diameter = 9
socket_facets = 6
nut_thread_step = 2
resolution = 0.1
wing_ratio = 1
texture = exclude
facets = 6
thread_step = 2
slot_depth = 2
head_height = 5
thread_outer_diameter = 8
non_thread_diameter = 0
socket_depth = 3.5
head_diameter = 12
head_type = hex
thickness = 6
outer_diameter = 8
inner_diameter = 2.5
slot_width = 1
type = washer
step_shape_degrees = 45
non_thread_length = 0