my dewalt drill keeps stripping screws even on the lowest torque setting, am i doing it wrong?

Diagnosis

The issue you're experiencing with the DeWalt DCD771C2 is likely not a failure of the clutch mechanism itself, but a combination of "cam-out" and excessive rotational speed. When a screw strips, it is usually because the driver bit is no longer seated fully in the screw head, causing the metal edges of the bit to chew through the screw's drive slot. On the DCD771C2, the lowest torque setting (number 1 on the clutch ring) is designed to prevent the screw from being driven too deep into the material, but it does not control the speed of the motor. If you are using the high-speed gear (Gear 2) while on a low torque setting, the drill is spinning too fast for you to maintain a perpendicular angle. This causes the bit to "walk" or jump out of the screw head the moment the clutch begins to slip. Furthermore, if you are using generic bits that don't fit the screw head precisely, the torque—even at the lowest setting—will be concentrated on a small surface area of the screw head, leading to immediate stripping.

How to Fix It

To stop stripping screws with your DCD771C2, follow this precise operational sequence to maximize grip and control:

1. Switch to Low Gear: Move the speed selector switch on the top of the drill to "1". This increases torque while decreasing RPM, giving you significantly more control over the screw head.
2. Set the Clutch: Rotate the torque adjustment ring to the lowest numerical setting (1). This ensures the drill will "click" and stop applying force long before the screw head is stripped.
3. Pre-Drill Pilot Holes: Use a drill bit that is slightly thinner than the shank of your screw. For a #8 screw, use a 1/8" bit. This removes material and reduces the friction the screw encounters, meaning you need less torque to drive it.
4. Apply Axial Pressure: Lean your body weight into the drill. The goal is to force the bit into the screw head so that it cannot lift or "cam-out." Keep the drill perfectly perpendicular to the workpiece.
5. Slow Start: Pull the trigger gently. Do not "slam" the trigger to full speed. Start the screw slowly until the threads bite, then increase speed.
6. Incremental Adjustment: If the clutch clicks before the screw is flush, rotate the ring one notch higher (to 2, then 3) and repeat.

If That Didn't Work

• Upgrade to Impact-Rated Bits: Standard bits often have tolerances that are too loose. Switch to a set of high-quality impact-rated bits or, if using Phillips screws, try a "Pozidriv" bit if the screw head has the additional small radial lines. This provides a much tighter fit and prevents the bit from slipping upward.
• Check for Material Hardness: If you are driving screws into hardwoods like oak or maple, the friction is significantly higher. Use a wax lubricant or a drop of dish soap on the screw threads to reduce the torque required to seat the screw.
• Inspect the Chuck: Ensure the keyless chuck is tightened fully. If the bit is wobbling even slightly within the chuck, it will create an angle that leads to stripping regardless of your torque setting. Tighten the chuck firmly by hand or with a strap wrench.
• Switch to Torx/Star Drive: If the project allows, replace your Phillips screws with Torx (Star) drive screws. Torx heads are designed specifically to prevent cam-out and are virtually impossible to strip compared to traditional cross-head screws.

Heads Up

• Avoid Gear 2 for Screwing: Only use the high-speed gear (Gear 2) for drilling holes. Using it for driving screws often leads to over-torquing and stripped heads due to the lack of precision.
• Listen for the Click: The "clicking" sound of the DCD771C2 clutch is your signal to stop. Do not continue to hold the trigger once the clutch starts slipping, as this can wear down the internal clutch plates.
• Bit Wear: Regularly inspect your bits. Once the edges of a bit become rounded, it will strip every screw it touches. Replace bits as soon as you notice the edges are no longer sharp.
• Battery Level: Be aware that a fully charged 20V Max battery provides more "kick" than a half-empty one; adjust your trigger pressure accordingly.