Usage Tips:[Circular Saw Blade Bolt] Replacement for 648697-00 circular saw blade bolt nut tool part, part number 648697-00,648697-00-2[648697-00 Circular Saw Blade Bolts] Blade bolt is compatible with the following for 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 3/16Inch Hex. The overall length is 0.73Inch with a diameter of 0.70Inch and a height of 0.2Inch. The bolt adopts a left-hand reverse thread design, ensuring that the socket cap does not slip during rotation. The flange part acts as a flat washer, which can be locked more firmly.[] The for parts cordless circular saw blade bolt is made from high-quality steel materials that are for improved strength and durability. The bolt's is coated with black oxide, not easy to rust. which enhances its stability and overall .[Please Note] To tighten the counter-threaded screw, turn it in a counterclockwise direction. Bolts should be measured using standard vernier calipers as they are standard parts. If the bolt on your for sawzall is damaged and loose, it should be replaced promptly to product functionality and your safety.Quantity:1PCSColour:BlackMaterial:carbon steelPackage Contents:1 * Blade BoltOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.