Nylon Nut:When tightened the nylon insert deforms around the threads of the fastener similarly to how an O-ring or even corks in wine bottles work.this increase in friction and contact between the threads creates a gripping action to keep the nut on the bolts.this elastic deformation provides a better gripping effect,but it is not designed to be reusable.
Tips: a: The rotation of nut must be perpendicular to the axis of the thread and must not tilt. b: Try to use torque wrenches or socket wrenches as much as possible, avoid using adjustable or electric wrenches, and the tightening torque should not exceed 40N.m