Complete Replacement Kit This set includes exactly what you need: 1 sturdy blade bolt and 1 precision outer clamp washer (Part Numbers 648697-00 & N621119). It's a direct, ready-to-install solution for DeWalt circular saw, eliminating the hassle of sourcing parts separately. Precision Fit for DeWalt Saws :Fits For DeWalt models including DCS390, DCS391, DCS392, DCS373, DC310, and DC390B. This exact-match design ensures optimal performance, secure blade retention, and smooth operation for both corded and cordless tools. Built for Demanding Performance: Crafted from industrial-grade, hardened steel, these components offer superior tensile strength and wear resistance. They are built to withstand high torque and repeated use, providing reliable durability that matches or exceeds OEM standards for long-term tool life. User-Friendly Installation & Value Achieve: a professional-grade repair in minutes with our straightforward replacement process. This cost-effective kit allows you to easily restore your saw's full functionality, extending its lifespan and saving you the expense of buying a brand-new tool. Reliable Upgrade for DIY & Pros: Whether you're a dedicated DIYer or a professional contractor, these parts deliver OEM-comparable quality for maintenance and repairs. Enjoy peace of mind with our commitment to durability and responsive customer support for a satisfactory experience.