I work for Alcoa Fastening Systems. We make fasteners for the railroad, auto, airplane, 18-wheeler (tractor and trailer), and lawnmower industries. I work in the "heat treat" department. I take "parts", as we call them, and heat treat them to the right spec; ie. grade 3, 5, or 8. By parts, I am talking about what you would call a bolt (we call them pins) and collars. Collars are used to hold the pin in place, kinda like a nut. I work 2nd shift, 3-11, Mon-Fri. I am the leadman for heat treat on 2nd shift. I am over 5 other guys.