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Contact Us sales askmonroe. All Rights Reserved. Live Help. A bolt works in tandem with a nut to secure objects or materials together. To install a cap screw, you need to turn the screw inside a tapped hole.
Knowing when to use bolts instead of screws, or vice versa, can be a challenge until you have more experience. Help from our team of experts — and access to our contractor-approved inventory and service — can make the process easier and give you more confidence as you begin your project.
At Construction Fasteners and Tools, our energetic and friendly team is ready to help you find the right fasteners for your next job. Contact us today for a helping hand or browse our wide selection of screws, bolts and nuts now.
Contact Us Brands BitMag. RZ Mask. Specials Flyers. Get to Know Us. When to Use Bolts Instead of Screws. You May try our User's Favourite. Posted: October 28, Bolts and screws are two standard options, which brings us to a common question: When should you use bolts instead of screws? What Are the Advantages of Bolts and Screws?
Out of stock. Add to Cart. In stock. Recent Posts. In this article, we will learn about the difference between bolt and screw. Almost in every part that we see around us, whether it is your laptop, mobile, car, motorcycle and a giant machine like an aeroplane, tanks, rockets, etc.
It is an externally threaded fastener that is designed for the insertion through holes in assembled parts. Generally, bolts have a uniform circular cross-section area.
It is an externally threaded fastener that is capable of being inserted into holes in assembled parts. In most of the cases, a screw has pointed tails. This is all about the difference between bolt and screw.
The following distinctions are roughly in order of popularity and significance. The US legal definition is paramount, particularly for those living in the US, but is not without its drawbacks.
In the United States, distinction between screws and bolts is particularly important, as bolts and screws are considered distinct commodities by the United States Customs and Border Protection, and are subject to different rates of taxation.
For taxation purposes, the distinction between a screw and a bolt in the US is as follows:. The problem with this definition is that it depends more on the application than the attributes of the component itself - under the right circumstances, either component could be considered a bolt or a screw. In these situations, a secondary differentiation is given, and the tolerances of the fastener are used to determine its type.
Under the secondary criteria, screws are described as having a 'fine tolerance', whereas bolts have a 'coarse tolerance'. This definition is far from perfect, as in this context, the terms 'fine' and 'coarse' refer to the quality of the screw, but 'coarse' and 'fine' threads already have specific definitions in mechanical engineering. While useful from a legal standpoint, it is clear that this distinction was created for the benefit of customs regulation, rather than to be used by engineers.
This definition is also only relevant within the US. Ultimately, the US legal definition of screws and bolts is a flawed, yet necessary distinction, but several more helpful alternatives do exist. One general distinction between a screw and a bolt is that bolts are driven from the outside of the head, whereas screws are operated by a central drive. This is primarily due to the fact that greater torque can be exerted on the outside edges of a larger head diameter, as a wider head provides a greater distance from the axis of rotation.
One problem with this definition is that it is sometimes difficult to define components which incorporate features of both type, such as slotted hexagon bolts, which have both a drive, and an externally driven head - in these situations, technical distinction and identification of the dominant characteristic becomes somewhat arbitrary.
Another key difference is that bolts are generally used in conjunction with unthreaded holes and secured using nuts , but screws are fastened directly into a threaded hole.
This is somewhat of a simplified version of the US legal definition, and has all of the same pitfalls - there is nothing to stop a screw from being used alongside a nut, or a bolt being used with a threaded hole to miraculously change its definition. Some argue that a screw is any threaded object which is installed by turning - by this definition, all bolts are screws, but not all screws are bolts.
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