[Circular Saw Blade Bolt] Replacement for Dewalt 648697-00 circular saw blade bolt nut tool part, part number 648697-00, 648697-00-2. Compatible with the following Dewalt 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] Blade bolt for circular saw with a 3/16 inch hex. Overall length is 0.73 inch, head diameter is 0.70 inch, and head height is 0.2 inch. Features a left-hand reverse thread design to prevent loosening during operation. The flange acts as an integrated washer for a more secure fit. [High Quality] Made from high-quality carbon steel for increased strength and durability. Forged construction enhances reliability. Surface coated with black oxide finish for improved corrosion resistance and extended service life. [Please Note] To tighten the reverse-threaded bolt, turn counterclockwise. Use standard measuring tools for accurate sizing. Replace the bolt immediately if damaged or loose to maintain tool performance and ensure user safety. Quantity: 1 PCS or 2 PCS Color: Black Material: Carbon Steel Package Contents: 1 x Blade Bolt or 2 x Blade Bolt (accessories only, other items not included) Note: Lighting and display settings may cause slight color variations between the image and actual item. Allowable measurement error is +/- 1-3 cm.