Many smaller fasteners are removed and installed by using a screw-driver, available in many sizes and tip shapes.
The most commonly used is called a flat tip or straight blade.
Flat-tip screwdrivers are sized by the width of the blade.
This width should match the width of the slot in the screw.
A flat-tip (straight blade)
screwdriver. The width of the blade should match the width of the slot in the fastener.
CAUTION: Do not use a screwdriver as a pry tool or as a chisel. Always use the proper tool for each application.
Another type of commonly used screwdriver is named for Henry F. Phillips, who invented the crosshead screw in 1934. Due to the shape of the screw and screwdriver, a Phillips screw can be driven with more torque than a slotted screw.
A Phillips head screwdriver is specified by the length of the handle and size of the point at the tip.
A #1 tip has a sharp point, a #2 the most commonly used. A #3 tip is blunt and used for larger sizes of Phillips head fasteners.
Both straight and Phillips screwdrivers are available with a short blade and handle for access to fasteners with limited room.
Both straight and Phillips screwdrivers are available with a short blade and handle for access to fasteners with limited room.
Two stubby screwdrivers that are used to access screws that have limited space above. A straight blade is on top and a #2 Phillips screwdriver is on the bottom.
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