Description
Overview:
This Ball Spring is a small but critical detent component for DeWalt impact drivers, keeping hex bits securely retained in the quick-release chuck while allowing smooth insertion and removal. Made from durable steel for long service life, it supports consistent tool performance under daily use. It is a Genuine Part for DeWalt/Black & Decker machines and matches the OEM reference N078434. Designed specifically for the DeWalt DCF835C2 and DCF88C52, it restores positive bit engagement if the original has worn, become contaminated, or lost spring tension. Suitable for professional trades and home users, this part helps maintain reliable bit holding and reduces downtime on site or in the workshop by keeping the driver's front end working as intended.
Key Features:
- Genuine DeWalt part for assured fit and compatibility
- Steel construction for durability and wear resistance
- Maintains positive bit retention and smooth chuck action
- Helps resolve weak bit holding and intermittent release issues
- Compact service item that is straightforward to fit with basic tools
- Supports long-term tool reliability in site, workshop, and DIY use
- OEM reference N078434 for easy identification
- Suitable for routine maintenance to prevent premature chuck wear
Typical Applications:
Used during servicing of the quick-change hex chuck on DeWalt impact drivers to restore firm bit retention and smooth engagement. Ideal after heavy use, contamination, or when bits wobble or slip. Helps keep drivers dependable for screwdriving, fixing, and light fastening tasks across construction, carpentry, electrical, plumbing, and general maintenance work.
Also known as:
Detent spring, ball detent, bit holder spring, chuck detent ball and spring, hex chuck retaining spring, driver head retainer spring, quick-release chuck spring, bit retention spring.
Fits Models:
DCF815, DCF835C2, DCF885, DCF885D2, DCF886, DCF88C52
Alternate Part Numbers:
N078434
Product Specifications
| L&S Part No. | N078434 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | DeWalt/Black and Decker |
| OEM No. | 078434 |
| Unit of Sale | Each |
| Applications | DCF815, DCF835C2, DCF885, DCF885D2, DCF886, DCF88C52 |
| Machine Type | Impact Driver |
| Fits Brands | DeWalt |
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