Fasteners for Swivel Casters from TORWEGGE
When working with casters, it’s important to not only focus on the casters themselves but also to give sufficient attention to the necessary accessories. For instance, back-hole swivel casters require a fastener to secure them in their housing. There are several options for this, which we will explain below. Explore our online shop for high-quality fasteners you can rely on!

Expander

18-20 mm to 34,6-37 mm

45 mm to 50 mm

M10

18 mm to 29 mm
Fasteners That Hold
There are various models available for securing a caster to its guide. One option is the screw-on pin, which is cylindrical and fixed to the caster using a cross screw. A secondary screw must be inserted into the screw-on pin to secure the housing as well.
An alternative to the screw-on pin with a cross bore is the expander. The expander consists of a long screw with a plastic sleeve that automatically expands as the screw is tightened. The material spreads outward until it presses against the walls of the back hole, firmly anchoring the expander in place. Expanders are available in both square designs for square tubes and round designs for round tubes.
Simple and Cost-Effective Fasteners
Plastic expander fasteners are often sufficient for securely attaching back-hole swivel casters. They are more cost-effective to produce than steel expanders and have the added benefit of being lighter. In humid or wet environments, their corrosion resistance is another significant advantage. Our expanders are available in sizes ranging from 18 mm to 37 mm, covering the most common inner dimensions of caster housings.
Fasteners for Square and Round Tubes
Our expander fasteners are available in both square and round designs. While round tubes have the advantage of evenly distributing loads and stresses, square tubes are easier to attach to other components. The choice between square or round tubes ultimately depends on the specific requirements of the housing to which the back-hole swivel casters will be attached.
Both tube shapes present the challenge of requiring a precisely crafted expansion sleeve to ensure the force is evenly distributed in all directions. Our expanders and screw-on pins meet these quality standards without exception, ensuring your swivel casters are securely connected to the housing.
Installation is particularly simple, especially with the expander model. Key considerations include the inner tube dimensions, tube shape, and collar height. Tightening the screw activates the expansion mechanism, providing a secure and nearly invisible connection inside the tube—an aesthetic advantage. In contrast, with a screw-on pin, the screw head for the cross bore is typically visible. Installing a screw-on pin requires slightly more effort, but the use of multiple screws results in an equally stable outcome. A key advantage of screw-on pins is their reusability.
In addition to the diameter and shape of the back hole, the length, which should match the width of the wheel, must also be considered. Along with the appropriate casters, the housing and additional accessories are integral parts of the caster assembly.
Order Fasteners for Swivel Casters Online at TORWEGGE
Our fasteners for apparatus casters meet the same high standards of safety and stability that apply to all TORWEGGE products. We offer all models in a variety of sizes and shapes, which you can easily filter using the side menu on the left. Alternatively, explore our pre-assembled apparatus casters, which already include the necessary fasteners. With our mounting plates, installation is quick and effortless.
We encourage you to reach out to us with any questions or special requests, as customer satisfaction is our top priority. Trust TORWEGGE for reliable products and exceptional service!