Patent ID: 7231983

Claim:
A device, comprising: a first internally threaded wellhead production component; a second wellhead production component having a longitudinal axis, at least a portion of which is positioned within an opening in said first wellhead production component, said second wellhead production component having a flange with an engagement surface that is approximately perpendicular to said longitudinal axis of said second wellhead production component; and a rotatable split lock ring having a longitudinal axis, said rotatable split lock ring being comprised of two externally threaded sections, said sections having an end surface that is approximately perpendicular to said longitudinal axis of said split lock ring, wherein at least a portion of said sections of said split lock ring are positioned between said first and second wellhead production components and rotated to threadingly couple said sections of said split lock ring to said first wellhead production component and abuttingly engage said end surface of said sections of said split lock ring with said engagement surface of said flange on said second wellhead production component, said sections thereby securing said second wellhead production component to said first wellhead production component.