Description:1.Material: Carbon steel construction with zinc plated, high hardness, provides great corrosion resistance and antirust ability for long service life.2.Advantage: The hanger bolt is good for wooden furniture jointing. Wood screw thread on one end and a machine screw thread on the other end.3.Applications: The double ended screw is suitable for outdoor furniture, household furniture, stair post, wooden guardrail, solid wood furniture, custom furniture, and office furniture.4.Need a pre hole before using Specification:Product Name: Hanger BoltMaterial: Carbon SteelFinish: Blue White Zinc PlatedMain Color: Silver BlueThread Diameter: M8Total Length: 50mm / 1.97-inchWood Screw Thread Length: 29mm / 1.14-inchMachine Screw Thread Length: 17mm / 0.67-inch Package Content:8pcs x Hanger Bolt