[Circular Saw Blade Bolt] Replacement for 648697-00 circular saw blade bolt nut tool part, part number 648697-00, 648697-00-2. Compatible with the following saw models: DC310K Type 1, DC390B Type 1 and Type 2, DC390K Type 1 and Type 2, DCS372B Type 1 and Type 2, DCS372KA Type 1 and Type 2, DCS373B Type 1 and Type 2, DCS373L2 Type 1, DCS373M2 Type 1 and Type 2, DCS373P2 Type 1 and Type 2, DCS391B Type 1, Type 2, and Type 3, DCS391B-B3 Type 1 and Type 2, DCS391L1 Type 1, DCS391M1 Type 1, DCS391P1 Type 3, DCS392 Type 1, and DCS393 Type 1 and Type 3. [Reverse Thread Blade Bolt] Features a 3/16 inch hex drive, overall length of 0.73 inch, diameter of 0.70 inch, and height of 0.2 inch. Designed with a left-hand (reverse) thread to prevent loosening during operation. The flange acts as a built-in washer for a more secure fit. [High Quality] Made from high-quality carbon steel for increased strength and durability. Coated with black oxide finish to resist rust and improve performance. Provides reliable stability and long-lasting use. [Please Note] To tighten the reverse-threaded bolt, turn counterclockwise. Use standard measuring tools for accurate sizing. Replace the bolt immediately if loose or damaged to maintain tool functionality and ensure user safety. Quantity: 1 piece Color: Black Material: Carbon steel Package Contents: 1 x Blade Bolt (other items not included) Note: Lighting and display differences may cause slight color variation between the image and actual item. Measurement tolerance: +/- 1-3 mm.