This 0-64 threaded screw is often used on traditional B & L frames.  This thread size 0-64 thread is used primarily in Optical eyewear and Jewelry.  The thread diameter is 1.32mm, Head diameter  0.071" / 1.8mm and Overall length is a plus 1/8" / 3.4mm,  finish color is decorative Gold platted, material nickel silver sold in 100 count vials.