WTB 2 sets of cheap (~$10 shipped) joint protectors for the two joints shown in photo. Even if you don't have one for sale I would really appreciate if you can tell me what the threads are for these two joints...
Thanks for the tip Junkie. I haven't seen too many different joints, and compared to my other 5/16x14 joints, 5/16x18 was what I thought it was. But the shafts don't fit each other--the piloted shaft will screw down about half way and then gets too tight, the flat-faced shaft will only go in a couple threads--so I thought they might be different threads.
Should I just chalk it up to slight variations and trust that 5/16-18 will fit both?