A coating prevents galling and reduces both `make-up` and `break-out` torques. With the introduction of Fluoropolymer coating, TEFCOT coated studs, bolts and nuts are widely used for enhanced corrosion resistance, permanent thread lubrication and consistently low applied torque to induced tension (clamping load). Since then, almost all international petrochemical, oil drilling rigs and chemical process industries have specified these studs for both offshore and land based applications. Apart from these TEFCOT coated B7 stud, bolts are installed under sea splash zones and chemical environments with great success. Over a phosphate pretreatment, a TEFCOT system far exceeds in performance when compared with galvanized, cadmium plated, aluminized or molycoated studs and other premium types of studs. The use of coated bolts is increasing in industrial applications, offshore, petrochemicals and marine industries due to their property of withstanding extreme corrosive environments and providing permanent lubrication over a very wide temperature range.