When it comes to bolts, there are many things that you need to know about. There are so many types that you can choose from, and they all have their own benefits and drawbacks. This article will cover some of the most common flat head fasteners, including Robertson and allen heads, as well as the self-drilling and Oval-head varieties.
Self-drilling Flathead Bolts
Self-drilling flathead bolts may seem a little bit over the top, but the technology behind them is fairly recent. The good news is that these types of screws are quite capable of piercing the toughest of metals, especially the softer varieties. These are a godsend in an emergency, such as a broken lock or a blown fuse. These screws are also great for joining two metals, as well as fixtures, decks, and more. They are made of high grade 18-8 stainless steel, which is known for its superior corrosion resistance. They are also a good way to disguise unsightly hardware, such as a rusted out hinge.
The true aficionado will be able to find a plethora of different designs and specifications, but a few popular choices include Phillips and MIL-LAST. They are also available in a range of finishes, including black, bronze, and zinc. Using self-drilling screws saves you the trouble of drilling holes in the first place, and they’re a convenient replacement for a slew of other fasteners. The name-brand variety will come with a warranty, and can be found at many retailers. They are a great way to save time and money, and are a worthy addition to any toolbox.
Unlike their predecessors, these modern era bolts are a breeze to install. The screw-in-hole design is easy to align and the threads will thread into the material without any help from you. This makes them ideal for a host of applications, from installing cabinets to attaching light fixtures to decks. These are a worthwhile investment, and are certainly worth the asking price.
In fact, the self-drilling flathead is the most practical choice for many home improvement projects. In addition to its patented resemblance proof design, the technology can also be applied to a wide range of materials, from plastics to copper. These nifty tidbits can be used to replace a myriad of dated and shoddy fasteners, and are well worth the money. This type of innovation is a game changer in the field of construction, and it’s likely to continue to gain traction as the market evolves.
Torx-head Fasteners
Torx-head fasteners are gaining popularity in many industries. They are great for use in tight spaces, requiring less user exertion than other types of fasteners. They also offer higher torque than other types of fasteners. However, these screws have a few cons that are worth mentioning.
Firstly, they have a six-point star shaped drive. This is designed to resist cam out, which can damage the screw head. This prevents over tightening and stripping. But, it can cause a few other problems, such as damaging the driving bit.
The best way to handle the “cam out” problem is by using the Torx head. These fasteners have a flat bottom hole with positive contact, which makes it more resistant to slippage. But, a disadvantage of this design is that it is not the cheapest.
Torx-head fasteners are used in a variety of industries, including consumer electronics and automobiles. They are also used for industrial applications, such as semi-automated production lines. They are also popular in the aerospace industry because of their resistance to cam out. They can withstand more torque than a standard hex nut.
Another benefit of a Torx design is that they can be driven with a Torx screwdriver. This reduces the risk of stripping, and allows for a higher torque transmission. The Torx Autosert feature can help guide the driver bit into the recess, creating a self-centering engagement action.
If you want to get the best value out of your money, consider buying from a reputable specialist supplier. These companies usually have a range of sizes, finishes and coatings. They can even recommend which ones are most suitable for your needs. They also stock a wide range of screwdriver bits.
A few common designs include Torq-set, a cruciform screwdriver, which is used in military and aerospace applications. These designs look similar to Phillips, but they are much cheaper.
The TORX Plus is a variation of the Torx system. It features five lobes instead of four, allowing for increased contact with the driving bit and more torque at high speeds. This improved version of the system is used for high-security applications.
Robertson-head and Allen-head Fasteners
The Robertson-head screw and the Allen-head flat head bolt are both fasteners designed to fit into countersunk holes. However, they are different in the way they are manufactured and used. The head of a Robertson-head fastener is a square shape, whereas the head of an Allen-head fastener is hexagonal.
The difference in the design of these two screws is primarily cosmetic. The square head of a Robertson-head screw is slightly tapered at the bottom and top, giving it a slip-resistant feature. It also has a sharp point, which can be used to bore into wood.
The rounded top and bottom of an Allen-head screw are not recommended for use in softwood or plywood. Instead, they are ideal for medium-density fiberboard, particleboard, and softwood. They are lubricated, making them suitable for general purpose construction.
Originally, a square-headed screwdriver was developed to reduce the risk of slippage when working with flat-head screws. It was easier to handle than a flat-blade screwdriver, and made sure that the driver and the screw were in contact.
In 1909, P.L. Robertson patented the idea of a square-headed screwdriver. While it was a major breakthrough, manufacturers did not take to his invention immediately. They were wary of using his method for fear that they would be forced to license it. They did not want to give up control of the patent to Ford, who had approached Robertson about licensing his invention.
Henry Ford’s manufacturing process relied on a Robertson-head screwdriver for faster assembly time. He discovered that the square-head design helped to reduce the amount of product damage. Nevertheless, he refused to grant Ford a licensing agreement.
Eventually, Ford decided to turn to a Phillips-head screwdriver. In addition to its look, Phillips-head fasteners are self-centering, preventing overtightening. They are often used to secure furniture and other home hardware. They are more expensive to produce than slotted-head fasteners, though.
Both screws are available in dozens of styles. A triple-drive screw can take both a Phillips and a slotted-head. A one-way head, on the other hand, requires a special tool to remove.
Oval Head Bolts
When choosing a screw, it is important to understand the difference between flat head and oval head screws. Each type has its own features and uses. Using the right fastener for your project can make or break a job. But it is also possible to get the wrong size. That means your project could be delayed or you might end up with a bolt that is too long or too short.
The primary differences between flat and oval head screws are the angle of the head and the depth of the countersunk hole. Oval head screws have a slightly rounded head and a countersunk hole. They are commonly used in decorative finishes and to cover switch covers.
The standard angle of a flat head screw is 82 degrees. It is designed to be flush with the surface it is fastened to. This allows the screws to fit low in the surface. It is also useful when protrusion is not acceptable. However, it does not necessarily increase performance. Alternatively, a flat undercut head is used instead. This is a shorter length head and provides more threading.
Oval head screws combine the features of flat and pan head screws. They are designed with undercut heads that are slightly rounded. They are also durable and can provide a smooth finish after installation.
These types of screws are ideal for use in a wide variety of applications. For example, they are often used on wooden furniture to keep the legs level. They are also used in framing and flooring joints. They can also be used to create internal fastening joints. They can be tapped or self-tapping. They are often used in storm shutters, too.
The diameter of a bolt can range from just over half an inch to just under two inches. It is measured from the head’s top to the threads’ ends. The ISO strength rating of the bolt is stamped on the head. If the head lacks markings, it is a lower grade bolt.
Oval head wood screws are preferred over flat head wood screws. They have a tapered shank that helps the screw sit flat against the flat surface it is fastened to. The tapered nature of the shank also helps with securing the screw into the wood.
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