Item Type: Thread Inserts Material: SUS304 Model: US Standard 5/16in-18x1.5D Diameter: Approx. 7.938mm / 0.3in Pitch: 1.41 mm Number of Turns Before Installation: 6.8 Length After Installation: Approx. 11.9mm / 0.5in Outside Diameter Before Installation: Approx. 9.6 ~ 10.2mm / 0.4 ~ 0.4in Diameter of Drilling Drill Bit for Installation: Approx. 8.3mm / 0.3in Thread Protective Sleeve Model Specification Description: For Example: M3x0.5X1.5D, which means that after the screw set is completed, the internal thread is M3, the pitch is 0.5, and the length is 1.5D length refers to 1.5 times the diameter, that is, 1.5x3=4.5mm , the length here refers to the length after installation.How to Use: Step 1: Prepare the butt terminal, and peel off the protective layer of the part where the wire needs to be connected. Step 2: Unscrew the screw of the terminal block and prepare the stripped wire Step 3: Insert one end of the stripped wire into the terminal, and then tighten the screw Package List: 50 x Thread Inserts