Beam Safety
Besides beam deflection, one should consider using a safety pin or bolt in pallet rack beams. Many pallet rack manufactures have built in safety pins into their beams for customer convenience. The problem with these pins is that there is still a chance to fail.
Many companies are now using additional safety bolts or pins in the side holes in the beam flange. When using bolts, use grade 5 bolts for the shear factor.
Safety pins and bolts are meant to improve safety and discourage beam uplift from forklifts and or other forces.