Piese de întoarcere din oțel din carbon

Carbon steel galvanized slotted computer screw 4-40UNC American thread material screw is a specific specification of American screw. It is a high-quality fastener, mainly designed to meet the needs of general industry and electronic assembly. It is made of high-quality carbon steel, has reliable strength and balanced hardness, and is an economical choice for many applications. În continuare, ne vom referi la acesta ca piese de cotitură din oțel carbon .