An aluminum bracket with a -in thick flange is to be clamped to a steel column with

Question:

An aluminum bracket with a ½-in thick flange is to be clamped to a steel column with a 3/4 –in wall thickness. A cap screw passes through a hole in the bracket flange, and threads into a tapped hole through the column wall. Specify a cap screw to provide a joint constant C between 0.2 and 0.3.