Original DeWalt 490549-00 — replacement countersunk screw designed to restore the blade/outer-flange assembly on compatible DeWalt plunge and circular saws. This is the factory part used to clamp the blade and flange securely so the saw runs true and safe.

Key details you need to know for a repair:

- Metric M8 thread with a countersunk (flat) head so it sits flush in the saw’s flange/baffle.

- Hex (Allen) socket drive for positive torque and reduced cam‑out during install/removal.

- Durable steel construction with a dark protective finish to resist corrosion and handle repeated tightening. Sold as the single screw used in the blade/outer-flange fastening.

Compatibility (typical applications): used on DeWalt plunge/circular saw models such as DCS520, DWS520, DC352/DC351 series (check your parts diagram to confirm fit for your exact type). Replacing a stripped, missing or damaged 490549-00 screw is a simple way to restore blade security, maintain cutting accuracy, and eliminate wobble or unsafe blade movement.

If you need a direct, like‑for‑like replacement for a damaged blade bolt or countersunk fastener on those DeWalt saws, this is the original DeWalt screw specified for that purpose.