3/8 Bolt with 1 thread good

thingiverse

Customized version of http://www.thingiverse.com/thing:193647 Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=193647 Instructions Using the following options: thickness is set at 2 slot width is precisely 1 resolution is set to 0.5 thread step size is fixed at 2 step shape degrees are measured at 45 inner diameter is exactly 8 thread outer diameter remains constant at 8 drive type is chosen as socket outer diameter measures 14 non-thread diameter equals zero facets total six type is defined as nut drive diameter stands at 5 texture exclusion is the preferred choice countersink depth reaches two units head height is set to five head style is specified as hexagonal nut step shape degrees are also measured at 45 slot depth reaches exactly two units nut thread step size is adjusted to one wing ratio remains consistent with a value of one nut thread outer diameter stays the same at 8 nut diameter measures 14.23 precisely nut type is identified as normal socket depth hits three and a half head diameter stands tall at 12 thread length totals 25 units non-thread length equals zero units nut height measures six point twelve units socket facets total exactly six