Tork Craft - Torx Tx 45 Classic Insert Bit 32mm Bulk - Tork Craft - Torx Tx 45 Classic Insert Bit...

Slot screw drive:

The drive has a single slot in the screw head and is driven by a flat-bladed screwdriver. This was the first type ofscrew drive developed. The screwdriver is sometimes called a flat-blade, flat-tip, slot-head or a flat-headscrewdriver.

Phillips:

The drive was invented by Henry F. Phillips. The Phillips screws have cross-slots that look like an X stamped intothe head. The drive was patented in the 1930's. This drive was invented to become a vast improvement from theantique slotted screw, which tended to cam-out easily. Nowadays, the Phillips screw is easily mistaken for aPozidrive screw.

Pozidrive:

The drive is an improved version of the Phillips drive. Greater torque can be applied on a Pozidrive screw. ThePozidrive screws and the screwdriver can be distinguished by a second set of radial indentations set at a 45°from the cross recess. The design is intended to decrease the likelihood that the Pozidrive screwdriver will slipout. The disadvantage of the Pozidrive is that is visually similar to Phillips and that many people are unaware ofthe difference or do not own the correct screwdrivers.

Robertson (Square drive):

The drive is also known as a square drive. Some people might refer to it as Scrulox screw drive. The screw head hasa square head. The tip of the screwdriver is tapered to make it easier to insert into the screw. Robertsonscrewdrivers are easy to use with one hand. It also allows the screw to be placed on the screwdriver prior todriving it in position.

Torx:

The drive uses a star-shaped recess in the screw head with six rounded points. It is designed to permit increasedtorque transfer compared to other screwdrivers. Torx is very popularly used in the automotive, electronics andwoodworking industries. It has a very high resistance to cam-out and has an extended bit life.

Security Torx:

The drive is similar to the standard Torx drive, but has a small pin in the centre of the recess. This drive is alsoreferred to as a tamper-resistant Torx drive.