Thomson® Lead Screw Flange, 1-3/8-16, 2-1/2 in Outside Dia, 1/2 in Thickness, 0.266 in Dia Bolt, 0.266 in Dia Mounting Hole, For Use With: SN Thread Mount Supernuts®/Thread Mount Bronze Nuts, Aluminum
These mounting flanges are designed for easy mounting when fixed to a bronze nut or Supernut®