APPLY TO - Used in-house maintenance, electrical appliances, industrial mechanical lamps, or other equipment where connecting parts are too thick or have structural limitations. Ordinary bolts can not meet the connection, so a double-end stud is needed at this moment.ADVANTAGE - This double-threaded stud bolt is durable and resistant to heat, corrosion, rust, and oxidation. It makes it less prone to breaking and deformation to ensure a long service life and perform well in harsh environments. Neat standard thread and smooth burr-free surface ensure a tight installation and prevent falling off.DESIGN - Both stud ends are mechanically threaded and of equal length. Generally, one end is screwed into the screw hole of the object, the other end is passed through the connected piece, and then a washer and a nut are put on to form a fastening device between two surfaces.NOTE - Please check the size before purchasing. Avoid over-tightening to prevent any damage to the screw threads or components.