The NSI G-40 4/0 Armored Wire Adapter for Ground Clamps offers a convenient solution when grounding armored cable alongside interchangeable NSI ground clamps. The steel screws and bronze adapter body are made of economical, high-quality metals that provide durable performance in a range of applications. Adapter swing 360 degrees to make alignment simple and install from any direction. Use this adapter with NSI ground clamps to easily ground 4/0 armored cable to water pipes in indoor applications. Stock products you can rely onstock NSI.