Acme 1/2-10 5 start Threaded Nut and Sleeve
Acme 1/2-10 5 start Nut and Sleeve. Just added a nut with set screw hole.
This nut and sleeve are based on the threaded connector uploaded by "Thesaint7811"
http://www.thingiverse.com/thing:48335/
Thank The Saint for uploading good functional STL files.
The basic nut here is pretty obvious... it's a nut. The other nut is exactly the same, but also includes a hole for a set screw.
The sleeve is for holding a bearing. The cylindrical "smooth" part is 15mm diameter. It will be turned on a lathe to fit a roller bearing.