Serrated gripper nuts for workpiece support. These serrated nuts are available standard and high hardness versions and are manufactured from SCM440(JIS) / 42CrMo4(DIN) heat treated to HRC 60. Smooth and domed versions are also available.
These are parallels and risers for use with OK-Vise RM Multi-Rail. They come in a range of sizes and either mount to the rail with a t-nut or attach to the clamps and stops using magnets. Serrated risers are also available.