[Circular Saw Blade Bolt] Replacement for 648697-00 circular saw blade bolt nut tool part. [648697-00 Circular Saw Blade Bolts] 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] Blade bolt for circular saw with a 3/16 inch hex. Overall length is 0.73 inch, diameter is 0.70 inch, and height is 0.2 inch. Features a left-hand reverse thread design to prevent slippage during rotation. Flange acts as an integrated flat washer for secure locking. [High Quality] Made from high-quality carbon steel for strength and durability. Coated with black oxide for corrosion resistance and enhanced stability. [Please Note] To tighten the reverse-threaded bolt, turn counterclockwise. Measure using standard vernier calipers, as this is a standard part. Replace immediately if the bolt is damaged or loose to maintain tool functionality and safety. Quantity: 1 PCS Color: Black Material: Carbon steel Package Contents: 1 × Blade Bolt Note: Light reflection and display differences may cause slight color variation between the image and the actual item. Measurement tolerance: ±1–3 mm.