8mm (1.25 pitch) Copper Lock Nut

This is an 8mm locking head nut (1.25pitch), it is commonly used on exhaust and turbine housings with 1.25 thread pitch.  These exhaust studs are sold individually and used in our 1.8T, 2.0 8V, 2.0T FSI, 2.0T TSI, Golf R and VR6 turbo kits to fasten downpipe to turbine housing.