Brass dowel with metric internal thread - from M4 to M16
- ✓ Metric internal thread M4 to M16
- ✓ Knurled outer surface
- ✓ Corrosion resistant
At SMK Meister, we offer high-quality brass dowels for professional mounting solutions in a wide range of building materials. As a fastening specialist with more than 50 years of industry experience, we know exactly what is important when it comes to reliable fasteners. Our brass dowels with metric internal threads combine all the advantages you need for a secure and durable attachment: maximum dimensional stability, excellent material quality and sophisticated construction.
The brass dowel is designed as an expansion plug and is ideal for efficient push-through mounting in conjunction with all metric screws from M4 to M16. Thanks to its smoothly running cone and knurled outer surface, this dowel ensures high holding forces and is absolutely rotatable. Whether in professional crafts, in industry or for demanding DIY projects — our brass dowels impress with their reliability and ease of use.
Brass dowel facts
Spreader plug with metric internal thread
Outer diameter 5.0 mm to 20.0 mm | Length 10 mm to 44 mm
brass
concrete, solid bricks, natural stones, clinker bricks, sand-lime bricks, solid wood, laminated timber
Depending on size and surface, 200 N to 3300 N
Certified quality standards in accordance with DIN ISO 9001
Benefits of the brass plug at SMK Meister
Optimum power transfer through expansion mechanism
The gently running cone in the brass dowel ensures an even distribution of the spreading effect in the borehole when screwed in. This results in an optimal transfer of force into the ground, which results in the highest load capacity.
Large range of sizes
With our ultra-modern machinery, we produce brass dowels in all standard thread sizes from M4 to M16. This allows you to find the right dimension for every application.
Corrosion resistance for long life
Brass is naturally resistant to corrosion and is therefore ideal for use in humid environments or outdoors. Our brass dowels retain their functionality for years.
Versatile uses
The brass dowel is suitable for a wide range of building materials — from concrete and various types of stone to solid wood and laminated timber. This versatility makes it the ideal fastener for a wide range of projects.
Efficient push-through assembly
At SMK Meister, we rely on simple and time-saving assembly solutions. The brass dowel allows push-through mounting — simply plug in, insert and tighten.
Important information about brass dowels
How does knurling prevent twisting in the borehole?
The knurled outer surface of the brass dowel is one of its most important design features. The knurling consists of fine, circumferential grooves that work into the wall of the borehole when screwed into the wall of the borehole. This effect is caused by the cone of the plug, which presses outwards when the screw is tightened and presses the knurled surfaces firmly against the drill hole. This creates a form-fitting connection that prevents spinning even at high torques. Our team of experts particularly recommends the brass plug when you need absolutely rotatable connections.
Is the plug suitable for metric screws and threaded rods?
Yes, the brass dowel has a precisely manufactured metric internal thread and is therefore perfect for all standard metric screws. You can use both machine threaded screws and threaded rods. The available sizes range from M4 to M5, M6 and M8 to M10, M12, M14 and M16. With over 50 years of experience in fastening technology, we know how important a precise fit is — our ultra-modern production guarantees this for every single brass dowel.
Can I also use the brass dowel in wood or laminated timber?
Absolutely! The brass dowel is not only suitable for mineral building materials such as concrete or masonry, but also for solid wood and laminated timber. The advantages of brass dowels are particularly appreciated in timber construction: It is corrosion-resistant, works securely into the material and offers reliable holding forces. At SMK Meister, we particularly recommend the M6 brass dowels and M8 brass dowels for wood applications, as they are optimally tailored to the properties of wood-based materials. The knurled surface ensures a perfect grip even in softer materials.
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Installing the brass dowel
Preparation/tool requirements
All you need to properly install the brass dowel is standard equipment: a hammer drill or hammer drill with a suitable masonry drill (see table for diameter), a vacuum cleaner or a blow-out gun to clean the borehole, and a screwdriver or wrench to tighten the screw. At SMK Meister, we value easy handling — no need for complex special tools. Make sure you use the correct drill diameter, as this is critical to the load capacity. For example, for an M8 brass dowel, you need an 11 mm drill, for an M10 brass dowel, a 13 mm drill.
Carrying out the assembly
Assembly is carried out using the proven push-through method: First, drill a hole in the substrate with the diameter and required depth specified in the table. Clean the borehole thoroughly from drilling dust. Now manually screw the threaded screw into the brass dowel so that about 2-3 threads still stick out of the dowel. Insert the pre-assembled unit through the prepared mounting hole of your attachment and insert the expansion plug completely into the borehole. Now tighten the screw with a screwdriver or key — the cone will spread and the knurling will work its way into the wall of the borehole. The brass dowel is fully resilient immediately after installation.
Follow-up/testing
After tightening, you should briefly check that the brass dowel is flush with the surface and is tight. A slight shake of the attachment shows you whether the connection is stable. Thanks to the twist-proof construction with knurling and the corrosion-resistant brass material, no further post-treatment is required. When installed correctly, our brass dowels guarantee years of reliability without maintenance.
What sets us apart
ISO certification
For us, quality is not a promise, but a proven standard. Our ISO certification proves that we consistently comply with the highest quality requirements in all areas of production — from sheet metal processing to fastening technology.
Reliability and punctuality
You can rely on us — not only when it comes to quality, but also when it comes to appointments. For over 50 years, our customers have known that we keep our promises. Timely delivery is not a bonus for us, but a natural part of our service.
Highly flexible corporate structure
As a family-run company, we respond quickly and unbureaucratically to your requirements. Short decision-making processes and an experienced team enable us to reliably implement even short-term orders, special solutions and changing requirements.
Innovations in fastening technology
Our product portfolio in fastening technology is constantly growing — driven by real practical requirements. Whether tilting dowels, heavy-duty folding plugs Big M or Balkonfix: Many of our products were developed in close cooperation with customers and are the result of decades of development work.
Approved and tested products
Our mounting solutions are not only tried and tested, but are also officially approved and tested. This gives you products that you can blindly rely on in safety-relevant applications, such as in construction and façade technology.
Open for individual customer projects
Standard solutions are a good start — but not always the best answer. We take the time to understand your specific requirements and work with you to develop tailor-made solutions in sheet metal and fastening technology.
FAQ - Frequently Asked Questions about brass dowels
Do I have to use special brass screws?
No, you don't need any special brass screws. The brass dowel works with all standard metric screws of the appropriate thread size. You can use machine, hexagonal, or threaded rods. It is only important that the thread of the screw matches the thread size of the plug.
Can I remove the plug again?
Yes, the brass plug can be removed again if necessary. To do this, simply unscrew the screw. The dowel itself can then be pulled out of the borehole using pliers or a suitable tool. Due to the knurling, it is stuck, but can still be released again.
Can the plug be loaded immediately after installation?
Yes, the brass plug as an expansion plug is fully resilient immediately after the screw has been tightened. No curing time or curing phase is required. The mechanical expansion effect occurs immediately upon tightening and the connection is immediately stable.
What loads can an M8 brass dowel bear?
An M8 brass dowel can take on different loads depending on the surface. In concrete with a compressive strength of ≥25 N/mm², the recommended working load is 1100 N. In solid bricks with ≥15 N/mm² compressive strength, it is 900 N.
Is the dowel corrosion-resistant for outdoor use?
Absolutely! Brass is a corrosion-resistant material that is ideal for outdoor use. The brass dowel resists moisture and weather effects for many years.
What screw length do I need for the correct expansion?
The screw length is the thickness of your attachment plus the anchoring depth of the brass dowel. The rule of thumb is: screw length = component thickness + dowel length + approx. 5 mm reserve. For optimal spreading effect, the screw should be passed through at least the entire dowel. Our team of experts at SMK Meister will be happy to help you select the appropriate screw dimensions for your specific application.