BelMetric European Copper Exhaust Flange Nuts evenly distribute force over a larger area against the fastening surface.
All-Metal Copper Lock Nuts have an elliptical or punched deformation meant to bite threads of the mating bolt or screw.
The Copper Plated finish is suitable for extreme heat automotive and motor sport applications, such as exhaust manifolds.
Temperature degree range: - 94 to 750 Fahrenheit.
