Abstract: An apparatus for clamping a pair of cables includes a clamp body of a clam shell configuration. The body includes first and second legs joined by an integral hinge. The clamp body and hinge are fabricated of a deformable material. First and second diagonal grooves are formed in the first and second legs and disposed at approximately a right angle to each other. First and second cables are placed in the grooves and the clamp closed over the cables. A one piece fastener such as a self-tapping screw is employed to close and tighten the clamp body about the cables partially deforming the clamp body and providing primary and secondary gripping forces on the cables.