What are the minimum and maximum edge distances for a countersunk rivet?

The minimum and maximum edge distances for a countersunk rivet are derived from industry standards that ensure adequate strength and integrity of the joint being fastened. For countersunk rivets, the accepted practice typically dictates that the minimum edge distance should be 2.5 times the diameter of the rivet. This minimum distance helps prevent issues such as material failure or cracking along the edge of the workpiece due to stress concentrations.

On the other hand, the maximum edge distance is set at 4 times the diameter of the rivet. This limit ensures that there is enough surrounding material to support the rivet and its load effectively, while also avoiding potential issues with placement that could occur if the distance were to exceed this maximum. Therefore, the specified range ensures optimal performance for the rivet joint under various load conditions, contributing to the overall safety and structural reliability of the assembly.