Are Robertson screws available in the US?

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 so many Screwheads?

Answer: The primary reason for the wide variety of screw head drive types is to ensure the fact that you will never have the proper screwdriver close at hand when you need it.

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.

Why are there different shaped screws?

The reason for the different styles is cost and torque. Phillips screws are self-centering, making powered screwdrivers possible. They’re somewhat more expensive to produce than slotted-head. They tend to ‘cam-out’ easily under torque, making it hard to apply much torque.

What are flat head screws?

Flat Head Screws, also called Countersunk Screws, are conical with a flat outer face and a tapering inner face. An advantage to this type of screw is that very little of the head protrudes beyond the surface, allowing it to sink into the material. These screws are commonly made out of stainless steel or zinc coating.

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.

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.

What are all the different screw heads?

What Are the Different Types of Screw Heads?

• Countersunk Screw Head Styles.
• Non-Countersunk Screw Head Styles.
• Different Driving Recesses.
• Slotted.
• Phillips.
• Phillips Tamper-Resistant.
• Combination.
• Hex External.

What are different screw heads?

What are the benefits of a flat head screwdriver?

The benefit of the flat head screw is its simplicity. Cheap to manufacture, I think they’re more strip resistant, and if you don’t have access to a screwdriver for whatever reason, you can screw/unscrew them with any flat, appropriately sized piece of metal. A flat head screw does not refer to the type of driver used.

What are the different degrees of flat head screws?

Flat head screws have varying degrees. The degree of a flat head refers to its had angle or the angle from the top of the head to the surface where the threaded part meets the head. An 82-degree flat head is the standard angle, but there are also 90-degrees, 100-degrees, and more.

What are the different types of screwheads?

Types of Screwheads. 1 A. Countersunk Screw Heads. Source: For Mere Mortals. Countersinking is a method used to help prevent splitting wood when you drill. With the use of a 2 B. Non-Countersunk Screw Heads. 3 C. Combination Heads. 4 D. Screwhead Drive Types. 5 E. Tamper-Resistant Screws.

What type of screws should I use for my project?

Domed heads are one of the most common types you’ll find. These are ideal for projects that don’t require you to hide the head of the screw like you would with a flat head, such as with an ottoman using decorative screws that protrude from the fabric.