The only size close I found at Brownells was 9/16x24. Spent years gunsmithing and never needed a 9/16x28. I rebuild MGB steering columns as a sideline business and some columns use 9/16x28 threads to attach the steering wheel.. Often columns come to me with buggered threads from people using a hammer and backed off nut to jar steering wheel off the shaft. I usually have to turn down the first thread or two in order to be able to reuse the old threads. Way too much trouble to set up to pick up the thread and recut in my lathe-less trouble to remove the threaded section of the shaft and replace it with new. So yes, I do have enough need to purchase the proper size die. Thanks to all who responded