Hexagon Socket ISO Metric Thread Class 14.9 (GR-45H) – Ultra High Tensile Strength Fully threaded and headless – used to secure a pulley, or gear to a spindle, Also known as “Grub Screws” For use where parts are frequently reset – The point style causes the least amount of damage to the component ‘As produced’ oiled finish (black) – Provides some shelf life but no real corrosion protection in use Tensile stress, Rm 1569 MPa DIN 913 / ISO 4026 / BS 4168-2 / ASME B18.3.6M