What key structural alignment must occur in the cylinder for the bolt to operate?

Answer

A perfect, unbroken shear line between the upper and lower pin sections

When the correct key is inserted, it lifts the internal pins to create a precise, unbroken shear line between the driver pins and the key pins, allowing the plug to turn the bolt.

What key structural alignment must occur in the cylinder for the bolt to operate?
inventorlockYaleLinus Yalepin tumbler