Does the US use Robertson screws?

American furniture, appliance and mobile-home industries use them, but the classic Canadian fastener is still virtually unknown to do-it-yourself home renovators. Home Depot reports Robertson screwdrivers account for less than 5 per cent of sales in the United States.

Why are there no Robertson screws in America?

Most historians attribute its lack of popularity in the United States to Henry Ford. Having been nearly bankrupted by shady European licensees, Robertson refused to license his invention to Ford. Without a guaranteed supply, Ford turned to the Phillips-head screw, cementing its reign in American industry.

Are Robertson screws only in Canada?

Although the Robertson screw is most popular in Canada, it is used extensively in boat building because it tends not to slip and damage material, it can be used with one hand, and it is much easier to remove/replace after weathering.


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Who uses Robertson screws?

Robertson screws are commonplace in Canada, though they have been used elsewhere and have become much more common in other countries. As patents expired and awareness of their advantages spread, Robertson fasteners have become popular in woodworking and in general construction.

Are Robertson screws better than Phillips?

This design makes a Robertson screwdriver less susceptible to cam-out than a Phillips driver because the driver bit inserts deeper into the screw head. Like a Phillips screwdriver, the Robertson driver is self-centering. This speeds up production and reduces product damage since slip-out rarely occurs.

Why is it called a Robertson screwdriver?

He was demonstrating a spring-loaded screwdriver when the blade slipped from the screw-slot and badly cut his hand. The incident inspired him, so he decided to invent an improved and safer screw – The Robertson® Drive. P.L Robertson always looked for a better way of doing things and enjoyed working on new innovations.

Why do we still use flat head screws?

The slotted head screw (commonly but incorrectly called a flat head) is the oldest type of screw in use today. Now, they are mostly used for decorative purposes and have less “impact”. Many people think they are used on light switch covers still for this reason.

What screwdriver was invented in Canada?

The Robertson screwdriver, also known as a square screwdriver, was invented in 1908 by P.L. Robertson, a native Canadian.

What screw head is least likely to strip?

Non-slip head

(A standard Phillips head has only four.) More contact means better grip, which makes the bit less likely to slip and strip the fastener. Shorter Outlaw screws have two recesses (12 contact points) but the same hexagonal shape.

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Are Robertson and square drive the same?

Although the terms “square drive” and “Robertson” are often treated as the same in catalogs, the difference (as I understand it) is that Robertson tools and screws have a slight taper to the square recess and the square drive ones do not. Most online sources claim that the tapered design is superior.

Who invented the Robertson screw driver?

The solution was found by a 27-year old Canadian, Peter L. Robertson. He was a pitchman for a Philadelphia tool company, a traveling salesman who sold goods at trade fairs and on street corners throughout eastern Canada. He spent his spare time in his workshop.

Why do we still use Phillips screws?

Originally Answered: Why do Philips screwdrivers and corresponding screws even exist? When they slip the trenches of the screws get worn out easily. The phillips head was invented to prevent over-torquing of screws by low-wage factory workers. The camming is a deliberate feature.

What is a Phillip head screwdriver used for?

Phillips screw heads allow a tighter fit than a flat head screw, which is why most factories and handymen use them. The screws tend to be lightweight and relatively small. The trick is to match your screwdriver to the type and size of screws you’re using. Your choice of screw depends on the type of job you’re doing.

What is the difference between a Phillips screw and screwdriver and a Robertson screw and screwdriver?

Phillips heads have a cross-shaped tool indent. … Square indentations are also known as Robertson screw heads and require a special driving tool. A torx head has a six-pointed star tool shape, which requires a torx screwdriver.

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What is a Robertson head?

Most of us call Robertson screws “square drive” or “socket head” screws. They were invented by Canadian traveling salesman Peter Robertson around 1906. But since Robertson refused to sell exclusive rights to the screw to Ford, he turned to using a screw developed by a guy named—you guessed it—Phillips. …

Is Torx better than Philips?

Fortunately, Phillips and Torx drives both center well and do not usually wander off contact.

Category Head: Phillips Torx
max torque lower higher
centering excellent good
overload behavior cam-out bit/screw fail
ergonomics average excellent