Screwdrivers

A screwdriver is a hand held tool designed to fasten and un-fasten screws by turning the screwdriver to apply torque in a clockwise direction to tighten the screw, and in an anti-clockwise direction to loosen the screw.

Screwdrivers are a widely used hand tool by many trades people, however they are most commonly used by furniture makers, electricians, joiners, carpenters, mechanics, electronics technicians, jewellers and DIYers.

Frequently Asked Questions about Screwdrivers

What are the most common types of screwdrivers and their uses?

Screwdrivers come in various types, each designed for specific screw heads. Common types include flat-head (slotted) screwdrivers for single-groove screws, Phillips screwdrivers for cross-shaped screws, Torx screwdrivers for star-shaped screws and hex screwdrivers for hexagonal screws. Each type matches a specific screw design to ensure proper engagement and prevent damage.

What materials are screwdriver tips made from and how does this affect performance?

Screwdriver tips are typically made from hardened steel, sometimes coated with materials like chrome or vanadium for increased durability and corrosion resistance. Higher-quality materials enhance the tool's lifespan and performance, especially under frequent or heavy use.

Are there screwdrivers designed for electrical work?

Insulated screwdrivers are designed for electrical applications because they have non-conductive handles and shafts to protect against electric shock when working with live circuits (usually up to 1000V). Always ensure the insulation is intact before use, otherwise the operator may be compromised and not protected from the electrical current that is being worked on.

Can I use a screwdriver for tasks other than driving screws?

It's not recommended to use screwdrivers for unintended purposes, such as prying or chiseling, as this can damage the tool and pose safety risks. Always use tools specifically designed for the task at hand.

How should I maintain my screwdriver?

Keep screwdrivers clean and dry to prevent rust. Regularly inspect them for wear, such as chipped tips or bent shafts, and replace damaged tools when required. Occasionally applying a light coat of machine oil to metal parts can prevent corrosion.

What are magnetic-tip screwdrivers?

Magnetic tip screwdrivers have a magnet at the tip, which magnetises the screw to the end of the screwdriver. This frees up one hand for the operator, as there is no need to hold the screw in place whilst starting to screw it.

Can I use an Allen key instead of a hex screwdriver?

Yes, both tools are interchangeable as they both have six sided (hexagonal) tips. Hex screwdrivers are generally longer than Allen keys and have a handle, so are are more comfortable to use over longer periods of time, however Allen keys have a short side and a long side, with a hex tip at both ends, so are of more use when a fastener needs torque applying to it in a tight or narrow space.