There are many different uses for the various types and options in threaded stud welds. As the name implies, the full thread version of the weld studs has the entire length of the stud threaded to the pitch required.
Options and Size
There is also the option for the pitch diameter studs. These are partially threaded down the length but have a portion of the stud above the weld left as unthreaded. The unthreaded part of the base part of the weld stud offers some additional strength, which can be important if shear is a concern on the project.
On the other hand, with the use of the fully threaded weld studs, there is no limit to the ability to snug down the bolt and create a solid mating between the two pieces being joined. With the use of the pitch diameter, care has to be taken to ensure that the unthreaded part is less in length than the total depth of the mated parts. If this is measured incorrectly, it will not be possible to fully snug down the fastener.
The diameter of the weld studs will be paired with a specific thread pitch. There is also the option to customize manufacturer any combination, but for specific projects, it will be required that the weld studs meet code standards.
Materials
When choosing the threaded stud welds of any type, be sure to consider the materials and the environment where the stud will be used. The two most common materials for these studs include mild steel and stainless steel.
Both are strong, durable options for threaded stud welds. Mild steel is often selected for strength and durability. Stainless steel offers superior corrosion resistance and is therefore typically used whenever there will be exposed to water, high humidity or any type of corrosive materials, liquids or gases.
