Robust and versatile tent peg for bolting down with a cordless drill. The swiveling top part makes it easy to bolt down the peg, while it is allready attached to a tentline. This is because it can rotate freely. 
If you have no 10mm socket wrench at hand, just use the optional wrench tool part

Print it out of PETG and with 4 to 6 perimeters (concidering you use a 0.4 nozzle). A layerhight of 0.25mm worked fine with me. Add a modifier in the neck area which makes it to 100% infill there. Even if it looks strange on the print plate, it does not need any support. The little sagging and air printing does no harm. just give it a try

If you are not sure if it is robust enough for your needs because the neck area looks like an intended breaking point, i can attest it is plenty strong. My PLA prototype broke in the threaded area after reaching down to some gravel. It was made with 3 perimeters and forced down even though it didnt want to, just to make it fail

Credit where credit is due.
I took inspiration from this well designed boltable tent peg by DStein, but since it needs support material, i had a try on designign my own