Sheet Metal Products: fastener solutions for installation by Capacitor Discharge stud welding

TR Fastenings offers high quality weld studs and weld nuts for sheet metal across a wide range of industries. Our Weld Nuts and Studs provide permanent female or male thread in sheet metal that is too thin to be tapped by other fastening methods. TR’s Weld products are easy to install using the relevant spot weld machinery and offer a strong, reliable application.

Installation process overview

Sheet metal fabrications are easily joined using spot welding.

Our Weld products are pin welded to sheet metal using an electric Capacitor Discharge (CD) gun. Access is required from one side only.
Considerations when welding studs to sheet metal include the requirement of equipment for installation and high re-work costs if welding nuts and studs are installed incorrectly.


There are many different styles and types of weld products in the market place conforming to various international standards. TR is a stockist of many of these, including a comprehensive range of DIN and ISO standard nuts.

Our huge stock range of products are easy and quick to install and offer a strong, reliable male thread, female threaded standoff or pin suitable for a wide range of sheet metal applications.
Weld Nuts

Weld Nuts »

Installed using projection welding equipment, our CD Weld Nuts provide a strong female thread and are suitable for thin sheet metal. All of our Weld Nuts are available in steel and stainless steel, in hexagon (DIN 929) or square (DIN 928) styles. Their highly engineered design overcomes the burn-out and re-tapping problems often experienced with lower grade products.
Weld Studs

Weld Studs and Standoffs »

Our CD Weld Studs, installed using a CD gun, provide a strong male thread in thin sheet metal. Pin welding adheres the stud to the sheet metal without the requirement of a pre-punched hole. Weld studs are installed on one side of the metal fabrication and offer quick installation, high joint strength and a permanent fixing. We have various sizes in stock in a range of different materials, including aluminium, stainless steel and steel. Our Weld Standoff products have extended body length with an internal thread.

Top FAQs

Are Weld Nuts available in different types?

Yes. Hexagon (DIN929) or Square (DIN928) are both available from stock.

What type of weld products do TR offer?

Weld Nuts (DIN929/DIN928), Weld Studs (ISO13918), Weld Pins (ISO13918 Pin) and Weld Standoffs (ISO13918 INT) are all available from stock.

Can you weld zinc plated weld products?

No, the plating finish makes it difficult to weld, so self-finished (nuts) or copper flashed (studs, pins and standoffs) are offered. ​

Is the sheet thickness a factor when considering Weld Nuts?

No Weld Nuts can be used regardless of sheet thickness.

Did you know?

Welding is one of the oldest forms of joining one product to another and it dates back to the Bronze Age, however welding as we know it was developed during the Victorian era.

For further information or to enquire about any of our sheet metal products please contact the team -

Useful links

Sheet Metal products

Sheet Metal Product Focus »

For over 45 years TR Fastenings has been at the forefront of sheet metal fastener innovation, manufacture and distribution, offering a wide range of products to suit a number of different applications and sectors.

Hank Self Clinch fasteners

Pressing »

TR manufactures and distributes a wide spectrum of sheet metal fastening products that are pressed into pre-punched holes. These include our own branded Hank® Self Clinch fasteners, Hank® Rivet Bushes, and K-Series® Nuts.

Blind rivets and blind rivet nuts

Riveting »

Riveting, one of many different methods for joining sheet metal, offers a permanent fastening solution which achieves a strong joint in blind sheet metal applications.

Sheet Metal Related Products

Related Products »

TR’s sheet metal related products include spring steel fasteners, masking caps and plugs, enclosure hardware and a full range of DIN & ISO standard bolts and screws.