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DeWalt DT4778-QZ 40mm x 152mm EXTREME Impact Flat Wood Drill Bit
DeWalt DT4778-QZ EXTREME Impact Flat Wood Drill Bit (40mm x 152mm)
DeWalt DT4778-QZ impact flat wood drill bit is designed for fast, accurate drilling in wood, with an impact-ready 1/4" hex shank for secure fitment in compatible quick-change holders. Built for trade and DIY users alike, it combines a robust shank with an optimised point for confident starts and efficient cutting.
As part of the EXTREME range, DT4778-QZ is intended for drilling into hard and soft wood, including applications where you may encounter nails, helping you keep productivity up on site and in the workshop.
Key Features
- Quick-change 1/4" hex shank: Helps prevent slipping and fits 1/4" quick-change systems for fast bit swaps.
- EXTREME steel construction: Extra-thick, robust steel shank designed for durability and extended bit life.
- Precision ground central point: Supports accurate positioning and faster material penetration.
- Bevelled outer cutting edges: Helps produce a clean hole pattern and controlled drilling.
- Hang hole: Enables convenient bit storage and can be used for wire pulling.
- Versatile wood drilling: Suitable for hardwood, softwood, lumber, and wood with nails.
Specifications at a glance
Suitable applications
- Fast drilling of larger diameter holes in hardwood and softwood.
- General carpentry and site work in timber and lumber.
- Jobs where clean starts and accurate positioning are important.
- Drilling in wood where nails may be present.
Comes with
- 1 x Flat Wood Drill Bit
Technical specification table
| Brand | DeWalt |
|---|---|
| Part number | DT4778-QZ |
| Product type | Impact flat wood drill bit |
| Diameter | 40mm |
| Overall length | 152mm |
| Shank | 1/4" hex quick-change |
| Range | EXTREME |
- Quick Change - 1/4 hex shank prevents slipping and fits all 1/4 quick change systems.
- Hang Hole - Allows for bit storage & wire pulling.
- Steel Construction - Extra thick and robust steel shank for outstanding durability.
- Beveled Pilot Drill - Beveled outer edges enable precise positioning of the drill bit and a clean hole pattern, even in wood with nails
- Application - For fast and accurate results in hardwood, softwood, lumber, and wood with nails
From their rich history to proven performance, to their focus on innovation and technology, there’s a reason why professionals choose DeWALT. After all, their tools and accessories are made to live on the job site. That’s where they’re used. That’s where they’re tested. And if there’s a problem, they solve it. The result is products they can stand behind. From 1922 to the present day, DeWALT continues to design and optimise professional jobsite solutions, built for intense working conditions and GUARANTEED TOUGH.
- In stock
- SKU:DT4778-QZ
