What is the recommended bolt hole diameter for bolted connections in relation to the bolt diameter?

The recommended bolt hole diameter being 1/16 inch larger than the bolt diameter allows for proper installation and movement during the bolting process. This slight increase in diameter provides sufficient clearance for the bolt to pass through the hole without being overly tight, which could make installation difficult or lead to misalignment.

Additionally, this extra space helps accommodate any minor imperfections or variations in the bolt or hole sizes due to manufacturing tolerances. This clearance is essential for ensuring that the bolt can be freely inserted into the hole and properly tightened without exerting undue stress on either the bolt or the connected materials.

Such recommendations are widely accepted in engineering and construction practices to guarantee strong and reliable connections, while also maintaining the ability to align components correctly during assembly.