What is a Robinson head screwdriver?

What is a Robinson head screwdriver?

Robertson screwdriver (plural Robertson screwdrivers) (chiefly Canada) A type of screwdriver having a square tip, designed to drive a Robertson screw.

What is a POZI screwdriver?

Pozidriv fasteners are a type of socket that’s used to drive screws that transmits more torque than Phillips screws. Pozidriv screws are externally threaded fasteners with torquing heads, which feature a cruciform socket with radial indentations that are set at 45 degrees from the main cross.

Is a POZI head the same as a Phillips?

According to ISO standard, the two cross-head screwdriver types are designated as PH for Phillips and PZ for Pozidriv screws.

Is POZI same as Philips?

Confusion between the Phillips and Pozi drives can cause significant damage during installation, however, Phillips and Pozi drives are structurally very similar, with both being heavily defined by their dominantly cruciform designs. This means that a Phillips driver can fit within the cruciform recess of a Pozi drive.

What does a torx head look like?

Torx is the trademark for a type of screw head, developed by Camcar Textron in 1967. It’s characterised by a distinct, 6-point star-shaped pattern and is often called a ‘star screw’ that requires a ‘star screwdriver’ with a ‘star bit’ to tighten and untighten them.

What is a square headed screw called?

What is a Robertson Screw or Robertson Head Screw? Most of us call Robertson screws “square drive” or “socket head” screws. They were invented by Canadian traveling salesman Peter Robertson around 1906. Up until that time, almost all screws were “straight drive” or “slot head” screws.

When did the square head screw come out?

In 1908, square-drive screws were invented by Canadian P. L. Robertson (1879–1951), 28 years before Henry Phillips patented his Phillips head screws, which are also square-drive screws.

Is Torx and star the same thing?

Torx (pronounced /tɔːrks/) is a trademark for a type of screw drive characterized by a 6-point star-shaped pattern, developed in 1967 by Camcar Textron. A popular generic name for the drive is star, as in star screwdriver or star bits.

Can you use a POZI screwdriver on a Phillips screw?

Phillips screwdrivers can be used for Pozidriv screws, but they do exhibit some play. Pozidriv screwdrivers, on the other hand, cannot be used for Phillips screws. The conical screwdriver shows play in the parallel screw. The parallel form prevents ejection forces.

What is a number 2 screwdriver?

The #2 is a 1/4″ shaft, perfect for derailleur adjustment screws. It is the most common cross tip (“Phillips”) required.