True or False: Gaps can occur between the countersink and a flush manufactured head.

The statement is true: gaps can indeed occur between the countersink and a flush manufactured head. When fasteners are installed, particularly countersunk screws, their alignment and seated position are crucial for a proper fit.

Factors such as material imperfections, misalignment during installation, or variations in manufacturing tolerances can lead to situations where the head of the fastener does not fully seat in the countersink. This can result in visible and potentially problematic gaps.

Understanding that such gaps can arise emphasizes the importance of careful installation practices and adherence to specifications during the assembly process. Proper fitting is essential for maintaining the structural integrity and aerodynamic performance of aerospace components.