Used with threaded fasteners (for example a bolt and a nut), designed to increase the load distribution.
M5 BOXED IN 200 0.8mm Thick
M6 BOXED IN 200 0.8mm Thick
M8 BOXED IN 200 1mm Thick
M10 BOXED IN 200 1.25mm Thick
M12 BOXED IN 100 1.6mm Thick
M16 BOXED IN 100 2mm Thick
M20 BOXED IN 50 2mm Thick
M24 BOXED IN 25 2.5mm Thick