DCF850P1 (Type 1) DeWALT Impact Driver - Overview

Keep your bit holder secure with this genuine OEM spring for DeWalt impact drivers. Authorized by the manufacturer and sold individually, this durable metal spring is designed to maintain pressure on the N078437 sleeve and the rest of the bit holder assembly, ensuring that the bit stays firmly in place during use. If the spring fails or b...Read moreecomes worn, the bit may no longer be held securely—making replacement essential for safe and effective operation. This part is commonly used in a variety of DeWalt impact drivers and requires only a screwdriver for installation. Simply disassemble the bit holder assembly, remove the worn spring, and install the new one in its proper position to restore full functionality.

Designed to help secure and stabilize key components within the chuck and drive assembly, this retaining ring plays an important role in maintaining proper alignment during high-torque fastening applications. Its durable metal construction helps keep internal parts securely positioned, reducing movement caused by vibration and repeated im...Read morepacts. Manufactured to original equipment standards, this component is ideal for replacing a worn, damaged, or missing ring, helping restore reliable bit retention, smooth operation, and overall tool performance.

Keep bits securely locked in place with this steel ball, a small but essential component of the tool's bit retention and locking mechanism. It works with the chuck assembly to help hold bits securely during use while allowing smooth insertion and release when changing accessories. A worn, damaged, or missing steel ball can cause loose bit...Read more retention or locking issues, making replacement an important repair. Made from durable hardened steel for long-lasting performance, this component helps maintain reliable tool operation. Because the location of internal retention components can vary between models, refer to your tool's parts diagram or service manual to confirm the correct placement before installation. Sold individually.

This genuine OEM belt hook is designed for use with select DeWALT tools and includes the necessary mounting screw for easy installation. It attaches securely to the bottom of the handle assembly, allowing you to conveniently hang your tool from your belt when not in use—keeping it within reach and your hands free. Made from durable materi...Read moreals and sold individually, this replacement part is ideal for restoring or upgrading your tool’s portability. Be sure to check your model number to confirm compatibility.

This synthetic gear grease is used to lubricate internal gears in power tools, reducing friction, wear, and noise during operation. Its high-performance formula helps prevent corrosion and protects moving parts under load. Applying fresh grease during maintenance restores smooth gear movement and extends tool life.

The Dewalt N042665 Screw is used on a number of Dewalt cordless tools to attach the belt hook the tool. This is a phillips head screw. It is also used to attach the Dewalt N268199 Bit Holder Bracket.