The torque specification for tightening a crank bolt in some car is
Tighten bolt 95 Nm + 45° + 15°
How does tightening 45 degrees and then another 15 degrees differ from tightening 60 degrees? When dealing with multiple bolts I can see how you could get a more even clamping force by first tightening all of them 45 degrees, followed by another 15 degrees. But when dealing with a single bolt, what's the point?