Description:Material: Made of carbon steel, color galvanized surface treatment, high hardness, and good wear resistance, standard inner hexagon socket; Provides great corrosion resistance and antirust ability for long service life.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; Inner hex head with flange, evenly stressed on the inner and outer teeth, and the structure is more stable.Applications: Suitable for connecting various objects, such as outdoor furniture, household furniture, stair columns, wooden guardrails, solid wood furniture, customized furniture, and office furniture. It has a good effect on furniture combinations.Specification:Nuts SizesInternal Thread Size: M8Nut External Dia: 14mm/0.55"Internal Hex Width: 8mm/0.31"Length: 20mm/0.79"Double-Headed BoltsThread Dia: M8(Machine screw)Thread Dia: 8mm/0.31"(Wood screw)Total Length: 50mm/1.97"Machine Screw Thread Length: 17mm/1.67"Wood Screw Thread Length: 31mm/1.22"Machine Screw Pitch: 1.25mmPackage Content: 16pcs x Hanger Bolts; 16pcs x Insert Nuts Interface