The Lee dies for my 6.5mm Creedmoor came with those oddball locking nuts that have eighteen little fingers, with which I believe users are supposed to tighten with their fingers. I decided to use examples of my older lock rings by different makers, but gave the matter a little more thought. I came-up with the idea to use 7/8-20 UNF hex nuts instead of the thin locking rings we get with our sets of dies. Went down to Big R just down the street and bought four of the 7/8 nuts. They work fantastically in that their height engages more of the dies threads than do the low-profile nuts. The sides are tall, so your twelve-inch adjustable wrench has a lesser chance to slip off the nut and smack you in the mouth. The attached image depicts the oddball Lee nut (left), the older hex nuts with which we all started (right) and the 7/8" nut from Big R. I got four of them for a little more than five bucks, which is about one-third of the gasoline to go to Reno and run around town until I found them. This nut is a Hillman product; Grade 8 hardness. I failed to record the part number-- I was just so happy to have found them so close to home and so inexpensive that I was giddy and forgot that you guys might have the same problem with the oddball locking rings...
