What is the standard angle of countersink?
What is the standard angle of countersink? 82° Countersunk-head screws that follow the Unified Thread Standard very often have an 82° angle, and screws that follow the ISO standard very often have a 90° angle. Throughout the aerospace industry, countersunk fasteners typically have an angle of 100°. How is a countersink angle measured? Countersinks tend […]