What Are Screwdrivers?
Screwdrivers are hand tools used to drive and remove screws by matching a shaped tip to a screw recess. From general-purpose Phillips and slotted drivers to Torx, security, insulated, multi-bit, and precision styles, this category covers the sizes and tip types most techs and DIYers use every day.
Which Screwdriver Do I Need?
- Phillips (PH) – Most common cross-shaped tip for assembly, carpentry, maintenance, and repair.
- Slotted (Flat) – Simple straight blade for hardware, electrical plates, and legacy fasteners.
- Torx / Star (T) – Six-lobe tip that resists cam-out for higher torque and secure fastening.
- Tamper-Resistant Torx – Torx with a center pin for security screws in electronics and equipment.
- Precision Drivers – Miniature tips and rotating caps for fine work on small fasteners.
- Insulated Drivers – Electrically insulated shafts/handles (see rating) for electrical work.
- Multi-Bit / Ratcheting – One handle with interchangeable bits for compact portability.
Phillips vs. Slotted, When to Use Each?
Use Phillips when you want quick alignment and reduced slipping under moderate to high torque. Choose slotted for straight-slot hardware, adjusting set screws, and trim plates where a flat blade fits best.
What Is a Torx or Tamper-Resistant Screwdriver?
Torx drivers have a six-point star tip that transfers torque efficiently and reduces cam-out. Tamper-resistant Torx adds a center pin in the screw head; the matching driver or bit has a hole to clear the pin.
Insulated Screwdrivers, What Do the Ratings Mean?
Insulated screwdrivers are designed to help protect against electrical shock when used correctly. Look for the marked rating (e.g., 1000V) and follow all safety practices, use only on de-energized circuits whenever possible and confirm your PPE requirements.
Precision & Specialty Drivers
- Precision sets for electronics, eyewear, and small assemblies.
- Nut drivers & multi-bit kits for flexible shop and field work.
- Magnetic & go-thru styles for holding fasteners or delivering force through the shank.
How to Choose Length & Tip Size
- Match the recess: Select PH/SL/Torx to fit the screw exactly, undersized tips damage heads.
- Pick shaft length: Short for tight spaces; longer for reach and better sight lines.
- Handle style: Choose cushioned or acetate grips; ratcheting saves time on repetitive work.
Care, Safety & Use
- Keep tips sharp; replace worn or rounded tips to prevent cam-out.
- Don’t use a screwdriver as a pry bar, punch, or chisel.
- For live electrical work, use properly insulated drivers and follow your safety procedures.
- Wipe shafts clean to prevent debris from slipping in the recess.
Screwdrivers FAQ
What size Phillips screwdriver should I use?
Match the driver size to the screw: common sizes are PH#0–PH#3. The tip should fill the recess snugly without wobble.
When should I choose Torx over Phillips?
Use Torx when you need higher torque with less cam-out, common in automotive, machinery, and equipment panels.
Are insulated screwdrivers necessary for electrical work?
If there is any chance of contact with energized parts, use properly rated insulated drivers and follow lockout/tagout and PPE rules.
What’s the difference between tamper-resistant and standard Torx?
Tamper-resistant Torx screws have a center pin; the matching driver has a hole to clear the pin.
How do I prevent stripping screws?
Use the correct tip type/size, apply firm in-line pressure, keep the driver square to the head, and stop if the tip slips.