... and production machinery.Features of ball screw and support nuts:Long operating life, High lead accuracy to C3 ... type: Rolled grade or grounded grade is availableType of Nuts: SFU, SFT, SFE, DFU, DFI etc.Size ... type: Rolled grade or grounded grade is availableType of Nuts: SFU, SFT, SFE, DFU, DFI etc.Size ... type: Rolled grade or grounded grade is availableType of Nuts: SFU, SFT, SFE, DFU, DFI etc.Size ...