Pipe Coupling Bolt Hole Diameter 1/2 in Bolt Material Alloy Steel Finish/Coating Epoxy Coated Fitting Nominal Pipe Size 1/2 in Fitting Type Flanged For Movement Type Vibration Material Grade 12L14 Maximum Operating Pressure 150 psi Offset Distance Not Applicable Overall Length 4 1/2 in Pipe Fitting Material Steel Seal Material Nitrile Seal Type Included Standard Basic Fitting Shape Coupling For Pipe Schedule 250