Elscint Weld Nut And Bolt Feeder It is then held at that position through magnetic property. All these arrangements can be provided by Elscint. This reduces the manual intervention required for feeding and placing of the nut bolts. Either of Elscint vibratory parts feeder Model 160 or Model 250 or Model 400 can be used for this purpose depending upon the size of the nut bolts to be fed and the loading capacity required.