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Your cart is empty.Exhaust Manifold Stud and Nut Kit. M8x1.25 Copper Coated Flange Exhaust Nut, Top Locking. Grade 8.8 M8x1,25-46mm long studs. Specs for Stud -(Total length-46mm, Side A threads 15mm, Middle section 8mmand side B threads 23mm) A copper plated finish makes these locking nuts suitable for extreme heat automotive and motorsport applications, such as exhaust manifolds. Temperature degree range:- 94 to 750 Fahrenheit. The reduced 10mm wrench size allows installation in space restricted areas. This type of all-metal lock has an elliptical deformation meant to distort the threads of the mating bolt or screw. The smooth bottom flange acts as a built-in washer to evenly distribute force over a larger area against the fastening surface.
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