Domed nuts for workpiece support. These nuts are manufactured from SCM440(JIS) / 42CrMo4(DIN) heat treated to HRC 60. Serrated and smooth versions are also available.
Gripper jaws can be a great way of getting round part movement in roughing operations, this is by use of teeth in the jaw which bite into the material. This biting can also be a great way to get round problems using black bar or other rough material....