Power Tool Bits
What Are Power Tool Bits?
A power tool bit is a detachable tip used to drive screws, typically with a hand-operated screwdriver, drill, or impact driver. Interchangeable bits allow a single tool to work with many screw types and sizes, making them one of the most versatile additions to any toolbox. They are used across construction, automotive repair, electronics, and woodworking — and just about anywhere fasteners hold things together.
It's worth noting the distinction between driver bits and drill bits: a driver bit drives screws, while a drill bit drills holes. Knowing which you need before you shop saves time and protects both your fasteners and your workpiece.
Common Types of Power Tool Bits
Screwdriver bits come in a variety of styles, and which type you need depends entirely on the type of screw you need to remove or fasten. Here are the most frequently encountered styles:
- Phillips (PH): A cross-shaped tip, designed to cam out under high torque — the most widely used drive type in automotive and general assembly.
- Square Recess (Robertson): A square-shaped bit popular in woodworking and Canadian markets, and common in RV and recreational vehicle manufacturing.
- Torx (TX): A six-pointed star shape, designed for high-torque applications — increasingly standard in modern automotive assemblies.
- Hex (Allen): A hexagonal bit, common in machinery and furniture assembly.
- Slotted (Flathead): A flat blade; prone to slipping and less common in power tools, but still essential for legacy fasteners.
- Clutch Bits: A specialty style frequently found in RV and manufactured housing applications, designed to limit over-driving.
Why Having the Right Bit Matters
For the smoothest fastening, selecting the correct screwdriver bit for the fastener type is crucial. Mismatching the tool to the screw can ruin the workpiece, create irregular holes, strip the screw, damage the bit, or injure the user. This is especially important in automotive and RV maintenance where fasteners are often in tight spaces and stripping them can turn a simple job into a costly repair.
The majority of screwdriver bit sets sold to professionals and hobbyists alike are typically manufactured for use in a compatible handheld cordless power tool — either a dedicated cordless screwdriver or a multi-purpose drill driver. Most bits use a standard 1/4-inch hex shank, making them compatible with a wide range of cordless drills and impact drivers.
Shopping Tips: Bits vs. Sets
Whether you buy a screwdriver bit set or buy bits individually depends on your needs. If you're new to power tools, purchasing a large impact driver bit set that includes bits in various sizes can give you the essentials needed to complete many projects. For a specialty job, it might make more sense to purchase assorted screwdriver bits separately.
Screwdriver bits are typically made from steel and have a variety of different coatings such as Black Oxide, Titanium, and Diamond — with harder coatings generally delivering better wear resistance for repetitive production use.
Top Brands in Power Tool Bits
When it comes to power tool bits for RV, automotive, and general maintenance use, AP Products stands out as a go-to source. AP Products has offered recreational vehicle replacement parts since 1992, and their bits lineup — which includes Phillips, square recess, and specialty clutch-style insert bits — is purpose-built for the demands of RV assembly and repair. Their broad selection of insert bits and power bits makes them a practical choice whether you're doing a quick fix or a full panel replacement.