Customized version of http://www.thingiverse.com/thing:713300

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=713300

Using the following options:

cross_section = 0
diameter_2 = 125
diameter_1 = 119
knurled_density = 59
height = 5
knurled_strong = 5
screw_hole_diameter = 55
screw_hole_length = 57
supportless_friendly = 1
nut_thickness = 2.5
knurled_height = 100
nut_width = 5.42
backlash = 0.1
nut_sides = 6
bottom_thickness = 0.6