... proven self-clinching design,install with a squeeze in punched or drilled round holes-and become permanently ... self-clinching design,install with a squeeze in punched or drilled round holes-and become permanently ... .TYPES:SO-M3-103.Simplify and save time in the assembly process4.Thread sizes #4 to #10 ... (nonstandard). Our high-quality screw is widely used in domestic trades such as toys, furniture, lamp decoration, ...