LT Insulator Shackle Straps are assembled with two sets of bolts, nuts and spring washers. Century Extrusions Ltd. Is an ISO 9001-2008 awarded company that manufactures LT Insulator Shackle Straps. The other products manufactured by Century Extrusions Ltd. Include Helical Fittings, LT Connectors, LT Line spacers and Vibration Dampers. LT Insulator Shackle Straps are made of mild steel flat. These are suitable for shackle insulators. After fabrications, the shackle straps are hot dip galvanized as per IS: 2633. The spring washers are electroplated. These are then fitted with cross Arms.