Manufacturers design them to fit specific standards. A bolt works with a nut to secure objects or materials together. Lag screws are traditionally specified for many structural loads in wood construction. Page 2 | Lag Screws, and Carriage Bolts are used to create heavy duty load bearing joints in building outdoor structures and landscaping Page 2 | Structural Screws (Lags & Bolts) The store will not work correctly in the case when cookies are disabled. The head of the heavy hex structural bolt is specified to be the same size as the heavy hex nut of the name nominal diameter, allowing a single size wrench or socket to be used on the bolt head and nut. Mar 14, 2018 - High-strength structural screws are beginning to displace traditional lag bolts screws as the fastener of choice for structural applications. Structural screws serve as many functions as lag bolts, but are considerably easier and more efficient to use. A bolt is not self-tapping and needs a nut to stay secure. A nut is a component that fits over the end of a bolt. Best Wood Screws for Plywood- Buying Guide & Review. Compare; Find My Store. Always choose the right size screwdriver for a given fastener; otherwise, stripping will increase. thehemloft.com is a participant in the Amazon Services LLC Associates Program, Receives commission on purchases made through links. View All. Doing this will cut downtime and effort put into drilling. Don’t use stainless steel screws and bolts in or near the saltwater environment. Bolts are more expensive than screws. Structural Screws Vs Lag Bolts: Comparison, Structural Screws Vs Lag Bolts: Safety Tips. Unlike structural screws, lag bolts are only available with hex heads, and installing them will require a nut driver and a rachet. after looking at the comparison of structural screws Vs lag bolts we understood that both are both critical. Since structural screws are made from hardened heat treated steel, they can be significantly thinner than lag bolts while being capable of holding as much or more weight than traditional lag bolts. for pricing and availability. The minor thread bores out additional space to make the clearance hole that would need to be pre-drilled if using a lag bolt. This happens when you do not drill a pilot hole. Required fields are marked *. Professionals call it a blind screw. And also lead to galvanic corrosion. Your email address will not be published. When it comes to the bolts vs. screws debate, you’ll find they have different advantages because they’re designed for different applications and materials. You may need repairs on the project if you use the wrong fastener. Screws come in a variety of sizes and types. The shape of its one end is like a wood screw. Here's how they compare. Some structural screws have "teeth" on the lower threads that act as a saw blade, making it much easier to drive. RSS screws come in a variety of thicknesses scaling with their length; 6" are available as 5/16s or 3/8s, 8" only in 3/8s. Before choosing the Bolt and screw, consider these three factors: The use of bolts or screws depends on your project. In this article, we will describe them one by one. They meet the requirements for structural applications, are easy to use and leave a flat finish. They meet the needs of many do-it-yourself projects. Companies carry out electroplating or hot-dip galvanization for zinc coating. The Type 17 drill point allows for an easy start. You can just zip them in with any 18-volt drill (no pilot hole required). The 5/16s is a hair thicker(and stronger) than the Timberlok spec; the 3/8s is quite noticeably so. Structural screws have great tensile strength and torque strength. In the end: nails, hex bolts, and lag bolts are still better in most applications. A hanger bolt has two threaded ends. They are Dowel screws and Set screws. Jul 16, 2016 - High-strength structural screws are beginning to displace traditional lag screws as the fastener of choice for structural applications. 02-08-2020 02:56 PM . Topic tags/keywords: lumber rack wall mount lag screws bolts structural. Always use hot-dip galvanized components to avoid compatibility issues. Apart from their exceptional strength and durability, lag bolts are a long lasting solution. They need a nut and a washer for their installation. Structural screws use heat treated steel and can be smaller in diameter because of it. Structural screws (also called “construction” screws) are stronger than lags and make longer-lasting connections. You should not hammer screws. They have more strength than most larger dimension screws. Reviewed By Daniel Nielsen Latest Updated December 14, 2020. Meanwhile, a bolt can be as any type of fastener that requires a nut in order to create a joint. It has a hex head that has excellent retention in wood. So, the fundamental difference between screws and bolts is that the former is used to assemble threaded objects, while the latter is used to assemble untreaded objects. The significant difference is the process of installing them. It is code listed under IAPMO UES ER-192 and meets 2015 and 2018 IRC® and IBC® code requirements for several common wood framing applications. Fastenal Uses Cookies to Improve User Experience. Screws are versatile fasteners. Below is the breakdown on structural screws, how they compare to lag bolts, and where they can effectively be used as a lag bolt alternative. #0 x 5-in Gray Ecoat Hex-Head Interior/Exterior Structural Wood Screws (50-Count) Item #105523. This makes them a favorite choice. It does not use a washer or nut to holds objects together. If a job can use structural screws then they really are the better choice. Structural screws vs lag bolts « back to Designing Woodworking Projects forum. They may have Torx-6 contact point or Spider-8 contact point drive heads. Structural screws, like lag bolts, have an un-threaded portion that allows for the screw head and thread to pull the substrates together for a tight fit. In the following post, Aram Khachadourian, P.E., of Simpson Strong-Tie discusses the structural and economic advantages of this option. Compare; Find My Store. So, you are not saving money by going the cheaper way. This form allows a bolt to create a clamping motion as torque is applied to its nut. A screw features a helical groove wrapping around the shaft. Let’s now compare Structural Screws vs Lag Bolts for different aspects. Structural screws are just easier than bolting and cooler than nailing. They are more expensive than other screws. So, follow the safety rules and enjoy your work! Hey y’all, I’m curious if anyone has had experience … Cookies are not used for the processing, collection or storage of personal data under any circumstances. home | projects | blog. They may include projects like fencing or framing. After the un-threaded portion is what is generically called the minor thread (can also be called U thread). Structural screws are relatively new products on the market intended to be able to replace most applications where lag bolts would traditionally be used. This reduces wear and tear as well as the loosening of the Bolt over time. Timberlok screws all share a shaft diameter of 0.189" and minor/major thread diameter of 0.172/0.260. They provide a secure grip thanks to their threads and they meet the needs of numerous do-it-yourself (DIY) projects. Simply, a bolt is not relying on the holding strength of the threads in wood fiber. With that said, screws can make their own threads during the installation process. They may also have a hex head which helps to spread out driving torque. You may not know their exact uses. You have to drill two holes for each lag screw. These replace lag screws and through-bolts, have been coated with a proprietary three-step coating process that protects against corrosion (even in pressure-treated wood) and are ACQ-approved. Light or medium construction projects are best for screws. Proprietary wood screws now offer many more benefits than commodity bolts and lag screws. In addition, it is important to include a washer when using lag bolts as these add additional weight bearing strength. This can be less time-consuming. Consider price if you need a large number of the fastener. But, you may still want to drill a pilot hole. © 2019 Levi's Building Components 137 Newport Road Leola, PA 17540 (877) 897-7020. Structural screws and lag bolts are in use for household projects. Lag Screws. 71. They are available with hex-shaped heads. Screws and bolts also differ in cost and shape. Structural screws and lag bolts are in use for household projects. This zinc coat is for corrosion resistance. How To Unscrew A Screw Without A Screwdriver? The head also utilizes a T30 or T40 star drive making it virtually impossible to strip. There is another bolt without a head; professionals call it a stud bolt. Sometimes there is a need for several different types of fasteners for elaborate projects like decks, children's play areas, sheds, docks, and other similar projects. It is important to follow code regulations to ensure that the bolts used are capable of meeting required load bearing capacity. There is more risk of shearing. So, bolts work well for heavy-duty load-bearing applications. Traditionally, lag screws have been the most common method of attaching decks to buildings. Model #FMLL00550. In the past several years, there has been an increase in the use of screws in applications that have traditionally been reserved for bolts and lag screws. They tend to last longer as a stable connection with less shear. They need to rotate for the threads to grip. To properly attach a deck ledger using 1/2" lag screws… Wood screws can split wood. Different size bolts are used depending on the amount of stress the bolt will be under. Even though they are stronger than lag screws, they are easier to employed since they do not require any pre-drilled or pilot hole. They are both in use for different tasks. Manufacturers design them to cut the need to drill pilot holes or lags. Screws . You can use them in place of lag screws. They are a newer type of structural fastener. Since structural screws are made from hardened heat treated steel, they can be significantly thinner than Using the correct object at the correct place can help you avoid accidents. But, screws provide medium holding power. The minor thread bores out additional space to make the clearance hole that would need to be pre-drilled if using a lag bolt. Professionals use them for heavy-duty work. Screws and bolts can rust due to saltwater. Heavy-duty projects are best for bolts. Doing this will prevent the wood from splitting. In this article, we will describe them one by one. Lag bolts have a much larger dimension than structural screws. Bolts cost more than screw. Structural screws have a number of features that make them unique. Both have been used for specific purposes. Like screws, bolts are available in many sizes and types. You may not know their exact uses. Bolts and screws both provide secure hold in fastening. You need to use many lag screws because they have less strength. Professionals use lag bolts when they need a stable connection in projects like treehouse. A bolt is a non-tapering fastener that uses a washer and a nut. Take into account both these factors before choosing between bolts and screws. After the un-threaded portion is what is generically called the minor thread (can also be called U thread). The material you use for your project is also essential. These types of screws are stronger than the geenral lag bolts and are thus ideal for more sturdy connections. For the DIY homeowner, the choices are almost endless when it comes to different kinds of screws, bolts, and other fasteners to use for their project. The threads of the screw hold it in place. Screws are a versatile fastener, which makes them a favorite choice. Both objects look similar. A lag bolt is a large screw with partial threading. Copyright © 2021 thehemloft.com , ALL RIGHTS RESERVED. 49 posts in 577 days. Structural screws serve as many functions as lag bolts, but are considerably easier and more efficient to use. Screws have tapered ends, while bolts do not have tapering ends. Then, we will see where to use them. People also use them for construction work. Lag screws, also known as lag bolts, are used in wood construction for heavier load applications than most wood screws can support. It is a metal-to-metal sandwich that is holding boards together from both sides. While it is advisable to use bolts that are structurally rated, there are resources available that follow ASTM guidelines to determine load capacity based on the bolt diameter. At the end of the article, you will have a good idea about them. Your email address will not be published. Always use fastener lubricant to extend the life of a fastener. LedgerLOK vs. 1/2" Lag Screws This comparison video demonstrates time saved using the LedgerLOK Structural Wood Screw in place of lags when connecting a … Structural screws are screws thin, high-strength screws. And that's the key: Because the structural screw has a smaller shank diameter compared with a 1/2-inch-diameter lag screw, the same load is placed on the wood over a smaller area, and - similar to standing on the balls of your feet - the wood can't handle it. This structure allows a screw to affix several objects together via the contained force applied to the screw’s head while it is being tightened. The most common applications for structural screws include: Since structural screws have been on the market they have continued to increase in popularity among contractors. They also meet high standards for use in structural applications and compatibility with treated lumber. Some structural screws have "teeth" on the lower threads that act as a saw blade, making it much easier to drive. They provide greater holding strength than screws. People also use them for construction work. 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