Has anyone added to their thread.xls file the thread definitions for BSM, SMS or BSP threads? I have had a hard time trying to get the details of the first two mentioned threads, let alone making the speadsheet actually operate as I want within Inventor. BSM stands for British Standard Milk and I understand it is a Whitworth screw thread for RJT screwed couplings (whatever this means!). If anyone could help that would be great.