Transformer ground clamp bodies are cast from high conductivity, high strength copper alloy with cast high strength bronze eyebolts. Stainless steel nuts and lockwashers are standard on all clamps. For silicon bronze hardware, suffix catalog number with “SB. The HTGE provides a hex or square shoulder for wrench tightening. The flat surface also acts as a seal to the tank. The TGE may be tightened by using a wrench on the body.