20pcs Hanger Bolt Double Headed Bolt Self-Tapping Screw M4 M6 Thread Dual End 25/30/35/40/50/60mm Length for Furniture Description: 1.Carbon Steel construction with zinc plated, provides great corrosion resistance and antirust ability for a long service life. 2.Ideal for wooden furniture jointing. 3.Wood screw thread on one end and machine screw thread on the other end. 4.Need a pre-drilling hole before using. Specification: Product Name: Hanger Bolt Material: Carbon Steel Finish: Zinc Plated Main Color: Brass Tone Size: ThreadDiameter TotalLength WoodScrewThreadLength MachineScrewThreadLength M4 25mm/0.98-inch 12.5mm/0.49-inch 12.5mm/0.49-inch M4 30mm/1.18-inch 15mm/0.59-inch 15mm/0.59-inch M6 29mm/1.14-inch 16mm/0.63-inch 13mm/0.51-inch M6 35mm/1.38-inch 17.5mm/0.69-inch 17.5mm/0.69-inch M6 40mm/1.57-inch 20mm/0.79-inch 20mm/0.79-inch M6 50mm/2-inch 25mm/0.98-inch 25mm/0.98-inch M6 60mm/2.36-inch 30mm/1.18-inch 30mm/1.18-inch Package Content: 20pcs x Hanger Bolt _x000D_