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DCF840E1R (Type 1) DeWALT Impact Driver - Overview

Diagrams for DCF840E1R

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Screw,plastite – Part Number: N463678
$5.95
In Stock
Screw,plastite
Part #N463678
Steel Ball – Part Number: 604107-00
$6.40
In Stock
Steel Ball
Part #604107-00
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 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.
Compression Spring – Part Number: N019351
$6.40
In Stock
Compression Spring
Part #N019351
This is an OEM authorized part. It is sold individually. This spring maintains pressure on the N078437 Sleeve, and the rest of the bit holder assembly, to keep the bit in the holder. If this part fails the bit cannot be held in the bit holder. It is commonly used in impact drivers, and is compatible with the impact drivers listed below.
Chuck Collar Ring – Part Number: N921819
$6.40
In Stock
Chuck Collar Ring
Part #N921819
Forming a key part of the impact driver's quick-release mechanism, this chuck collar ring helps retain and secure hex bits within the chuck assembly for reliable fastening performance. Working with the sleeve, spring, and locking components, it supports smooth bit insertion and removal while helping prevent accidental bit release during operation. Manufactured to original equipment standards, this ring is an ideal replacement for a worn, damaged, or missing component, helping restore proper bit retention, dependable chuck operation, and overall tool performance.
SPRING – Part Number: N811325
$6.40
In Stock
SPRING
Part #N811325
Machine Screw – Part Number: N042665
$6.40
In Stock
Machine Screw
Part #N042665
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.
Grease – Part Number: 286436-00
$276.34
Special Order
Grease
Part #286436-00
This is an OEM part sourced directly from the manufacturer. This 17.64 oz container of grease is used to lubricate the system of DeWalt equipment in order to protect the inner working parts and extend the life of the tool. One container is included per order.
Belt Hook – Part Number: N268241
$6.40
In Stock
Belt Hook
Part #N268241
This is a genuine Dewalt replacement part, it is sold in individually with the mounting screw. The Dewalt Belt Hook is attached to the bottom of the handle assembly on the tool model numbers shown below. Its purpose is to hook the tool to your belt when not using the tool.
Washer - Urethane – Part Number: 642883-00
$6.40
In Stock
Washer - Urethane
Part #642883-00
This is an authentic OEM part used in DeWALT and Porter Cable impact drivers. It fits between the anvil assembly and the sleeve. If it becomes lost or broken it will need replacing and a screwdriver may be needed during the installation. This part is made of urethane, a hard plastic, and is available individually.
O-ring – Part Number: N548553
$5.95
In Stock
O-ring
Part #N548553
O-ring – Part Number: N555946
No Longer Available
O-ring
Part #N555946
Felt Washer – Part Number: N556099
No Longer Available
Felt Washer
Part #N556099