The NL 781 is a basic button hole machine with a japanese shuttle hook. The NL 781 button hole machine is assembled with such qualities which respond to the mentioned specifications and help reduce operator fatigue,resulting in high quality button holes with higher degree of efficiency. The button holing position can be easily adjusted. This frther enhances ease of operation. A newly introduced mechanism in the needle thread trimmer prevents interference with the positioning of button holes. The shape of the face plate is designed to provide sufficient clearance around the needle enter position. As a result, ease of operation is further improved. The knife mechanism and stop - motion mechanism produce less noise when they actuate, thus contributing to a more comfortable working environment. The machine starts, decelerates and stops smoothly.