Structural screws and lag bolts are in use for household projects. People also use them for construction work. You may not know their exact uses. Both have been used for specific purposes. In this article, we will describe them one by one. Then, we will see where to use them. At the end of the article, you will have a good idea about them. Let’s now compare Structural Screws vs Lag Bolts for different aspects.
Structural Screws Vs Lag Bolts: Comparison
Before choosing the Bolt and screw, consider these three factors:
The use of bolts or screws depends on your project. Bolts provide a huge amount of holding strength. But, screws provide medium holding power. Light or medium construction projects are best for screws. They may include projects like fencing or framing. Heavy-duty projects are best for bolts. Bolts are also suitable when your project needs assembly and dis-assembly with ease.
The material you use for your project is also essential. The use of bolts or screws depends on the material.
Materials that need screws:
- Sheet metal
- Deck planks
Materials that are best for bolts:
Load on the fastener and the material you use are both important. Take into account both these factors before choosing between bolts and screws.
Consider price if you need a large number of the fastener. Bolts are more expensive than screws. But using a correct fastener will save money in the long run. You may need repairs on the project if you use the wrong fastener. So, you are not saving money by going the cheaper way.
Structural Screws Vs Lag Bolts: Table
|They have medium holding power.||They have high holding power.|
|Professionals use them for light-duty work.||Professionals use them for heavy-duty work.|
|You can use screws on plywood, pressboard, drywall, sheet metal, deck planks.||You can use bolts on: concrete, studs, beams.|
|They are cheaper than bolts.||Bolts are much more expensive.|
Structural Screws vs Lag Bolts: Overview
Screws are versatile fasteners. This makes them a favorite choice. They provide a secure grip due to their threads. They meet the needs of many do-it-yourself projects. Screws come in a variety of sizes and types. You can use them on wood, metal, drywall, and concrete applications. Manufacturers design screws to be self-tapping. But, you may still want to drill a pilot hole. You should drill all the pilot points at once. This can be less time-consuming.
Bolts provide more holding strength than screws and other fasteners. Bolts can provide a high level of holding power due to their threads. They need a nut and a washer for their installation. It helps to spread the load. This reduces wear and tear as well as the loosening of the Bolt over time. The nut secures the Bolt in place.
Like screws, bolts are available in many sizes and types. They are also usable with several materials like metal, wood, and concrete. To remove or install a bolt, you need a handheld or power wrench. The use advantage of power wrench is that it has more torque. The handheld wrench does not have as much torque as the power wrench.
Structural screws are screws thin, high-strength screws. Manufacturers make them super strong, heat-treated, sometimes galvanized steel. They are a newer type of structural fastener. You can use them in place of lag screws. Doing this will cut downtime and effort put into drilling.
They have more strength than most larger dimension screws. They tend to last longer as a stable connection with less shear. Manufacturers design them to cut the need to drill pilot holes or lags. Structural screws have great tensile strength and torque strength. They have shear between 125-200 kilograms. They may have Torx-6 contact point or Spider-8 contact point drive heads. They may also have a hex head which helps to spread out driving torque. Some varieties can also have a drill bit tip.
Manufacturers design them to fit specific standards. Companies label these standards on each type of screw. They are more expensive than other screws.
Professionals use lag bolts when they need a stable connection in projects like treehouse. It is in use for heavier and larger materials than normal wood or metal screws. Manufacturers make it from a carbon steel substrate with a zinc coat. This zinc coat is for corrosion resistance. Companies carry out electroplating or hot-dip galvanization for zinc coating.
Lag bolts have a much larger dimension than structural screws. Their dimensions start from about 1-inch long and ¼ inch thick. They use nuts to add to the integrity and strength of the connection. They are available with hex-shaped heads. They are not labeled with specific stress ratings. You may need to calculate its stress rating. They are more cost-effective.
There are some drawbacks to these bolts. You have to drill two holes for each lag screw. Doing this will prevent the wood from splitting. You need to use many lag screws because they have less strength. There is more risk of shearing.
Structural Screws Vs Lag Bolts: Safety Tips
- Screws and bolts can rust due to saltwater. Don’t use stainless steel screws and bolts in or near the saltwater environment.
- Always use hot-dip galvanized components to avoid compatibility issues.
- Always use fastener lubricant to extend the life of a fastener.
- Always choose the right size screwdriver for a given fastener; otherwise, stripping will increase.
- Never use steel and aluminum components together. Professionals use them together for particular cases. If you inappropriately use them, there will be a transfer of electrons, which reduces the integrity of the structure. And also lead to galvanic corrosion.
- The use of safety gear is important. Safety glasses are necessary to prevent metal shavings from flying into the eyes.
1. What is the difference between Bolt and screw?
2. Is Bolt stronger than screw?
3. What are a nut, Bolt, and a screw?
4. What is a lag bolt?
5. How do I use lag bolt?
6. Can screw split wood?
7. Can we hammer screws?
8. What do you call a screw without the head?
9. What do you call a bolt without a head?
10. What is the difference between Bolt and hex head cap screw?
after looking at the comparison of structural screws Vs lag bolts we understood that both are both critical. They are both in use for different tasks. Using the correct object at the correct place can help you avoid accidents. So, follow the safety rules and enjoy your work!