For a while Tim Scruggs used Acme pins, 3/8 by 10. The time period was about 1998 through 2000 or so. Flat faced. I have two.HUH?? 3/8x10?? Never heard that before. Was always told that bill used a 5/16x14acme for a while. I know his big pin joints were 3/8x10 but not the steel piloted joints. https://forums.azbilliards.com/threads/josswest-pin.167420/