Read Also: Different Types of Springs and Their Applications [Full Guide] The Function of Various Types of Screwdrivers Popular in both construction and electrical fields, the Robertson drive (commonly referred to as the square drive) is more common in Canada than the US due to licensing problems earlier in its history. Those listed above are the most popular types, but there are other more specialist and less popular screw types available, such as:

A huge selection is available for a wide range of applications. They can be classified by the type of material they’re made from, such as brass, stainless steel, carbon steel, etc., their size (diameter and length) and the different screw head types, drive types and thread types. Hex keys are named because they have a smooth hexagonal shank and no head. More commonly referred to as Allen wrenches, these screwdrivers sometimes come in an L-shaped shank with no handle, as multiple retractable sizes with a centrah handle (ala Swiss army knives), or even with a ball-shaped tip. Look for features such as shanks that reduce wood split, twin threads for a fast and accurate drive, and tips that don’t require pre-drilling. Although most precision screwdriver sets will offer similar bit sizes, they may not always have the same bit types. If you think you may be dealing with a more obscure fastener head than just Phillips or slotted — like Y-shaped or triangle — make sure the kit you choose includes that bit. If you’re not sure what you’ll be working on, but still want to be prepared for anything, we would recommend you play it safe and go with a kit with a large number of bits. Much like Phillips screwdrivers, Robertson drives use a numbering system. What sets these apart, however, is that all sizes are also color-coded for easy reference. Robertson Sizes Chart Color CodeThe purpose of a screwdriver is to both insert and remove screws and nuts. If you want to replace a watch’s battery, you won’t use the same screwdriver you use to hang a shelf on a wall. The different functional screwdriver design types are described below. In addition to their small bits, precision screwdrivers also typically feature a spinning end cap, which makes them comfortable to control and maneuver, even one-handed. When choosing masonry screws, consider the load it will bear, as different types are suitable for medium or heavy-duty loads.

Roofing screws are available in carbon steel and hardened steel. And, as they are most commonly used for outdoor applications, they have a coating that protects them from the elements and stops rusting. They’re available in gauge sizes ranging from 4 to 6.3mm and lengths ranging from 16 to 120mm. If you plan on using your screwdriver near any kind of live electrical wiring, you’ll need to use an insulated model. Unlike standard screwdrivers that have a bare metal shaft that can easily conduct electricity, insulated screwdrivers are covered with a nonconductive plastic material. This not only increases user safety, but also reduces the chances of accidental damage to the components you’re working on. One of the greatest tool inventions ever made is the screwdriver. Screwdrivers were reportedly created in the 15th century, and as we moved into the 21st century, you could find them in almost every toolbox. Masonry screws are available in zinc, carbon steel, hardened steel, and high tensile steel. They have an anti-corrosive coating and are tarnish-resistant, making them suitable for outdoor use. They’re available in gauge sizes ranging from 3 to 10mm and lengths ranging from 16 to 200mm.Robertson refused to license it to Ford because he had previously license it to a business in England but they went and declared bankruptcy so they could avoid paying the license fee/royalties and then went and started a new company free from license restriction. This unfortunately make Robertson shy away from Ford because it cost him a lot of time and money to fight the English fraudsters and didn’t want to go through that again. Drywall screws are used to attach plasterboard to light steel, wooden studs, or metal partitions. They’re typically lighter and have deeper threads than other types, enabling them to grip plasterboard securely and a sharp point so pre-drilling isn’t required. Types of screw heads for drywall screws include bugle, wafer, and countersunk. A bugle head sits flush with the plasterboard’s surface, a wafer head sits above the surface, and a countersunk head sits below the surface.