In this study, a study has been conducted on fabrication and control of different grain sizes of micro features fabricated by ultrasonic-assisted jet electrodeposition process using pulsed current power supply. At the present time, grain sizes have been controlled to improve the mechanical properties of fabricated micro features. The centre of attention of the study is application of pulsed power supply on the developed ultrasonic-assisted jet electrodeposition set-up, which involves pulsed current application between nozzle (electrolyte) and work surface in ultrasonic-assisted jet electrodeposition process instead of direct current application. The impacts of frequency and duty cycle on the grain size, nanomechanical properties and microhardness of fabricated micro features have been studied. It is experimentally observed that the pulsed current ultrasonic-assisted jet electrodeposition process has the capability to fabricate nano-sized grain micro parts and yields better mechanical properties as compared to those obtainable using direct current ultrasonic-assisted jet electrodeposition process.