large and small externally-threaded brass turning parts.
This group of pictures shows the comparison of the size of large and small externally-threaded brass turning parts.
As shown in the picture on the left, the large-size brass screw is a very fine thread of M36*1.5. The small size of the turned part is the thread of M2 (due to the severe reduction of the picture, this small thread turning piece has no visibility of its thread.
Large copper turnings are turning screws, Small threaded member is formed by thread rolling
