Pipe Clamp Bolt Material Not Applicable Clamp Material Alloy Steel Clamp Material Finish Zinc Galvanized Clamp Material Grade 1.0503 For Maximum Copper Tube Size 4 in For Maximum Outside Diameter 4 1/8 in For Minimum Copper Tube Size 1/2 in For Minimum Outside Diameter 1/2 in For Pipe Size 3 1/2 in Gasket Coverage Not Applicable Gasket Material Not Applicable Maximum Vacuum Pressure Not Applicable Number of Bolts Not Applicable Outlet Connection Type Not Applicable