... UV, fire resistant, with fiberglass2. Blades: copper tinned, or aluminum3. Shear head: zinc alloy4. Bolt, washer: Hot dip galvanized (HDG)steel5 ... jacketed secondary cable into the connector and tightening of a shear-head bolt. All connectors can be installed with only ... on the main wire. Connection Quality: Our unique double shear-head bolt ensures connection quality and the correct tightening torque ...