The surface of WF002 square nuts should be free of rust or oil stains, and the hole walls should be free of burrs or weld spatter. Next, the friction surface must meet the standard scratch resistance coefficient requirements after treatment. When using high-strength products, corresponding bolts and washers are required, and they must be used together; they cannot be interchanged. Thirdly, after treating the friction surface of the components, ensure it is clean of oil or other debris during installation. The friction surface must remain dry during installation; installation should not be performed during rain.

WF002 Square Nut must be strictly inspected before installation and any deformation on the steel plate should be corrected. Fifth, never hammer the nut during installation to prevent damage to the nut threads. Sixth, regular inspections of the electric torque wrench should be conducted during use to ensure the torque is always accurately positioned, and tightening operations should be performed in the correct sequence.