Miniature flange ballnut. C3,C5 Ground Ballscrew are available. The model for BSM series Ballscrew included: 0401 ,0601 ,0801 ,0802 ,1002 ,1004 ,1202 ,1402 ,1602 FBT Ballscrew Features: 1)High Reliability 2)High Precision 3)Smooth Movement 4)High Axial Stiffness 5)OEM/ODM Production.