Premium M3-M24 Cap Nuts: The Perfect Blend of Protection and Aesthetics
Our M3-M24 Cap Nuts, widely known as Acorn Nuts or Dome Nuts, are the ideal solution for applications where exposed bolt threads need to be concealed. Manufactured strictly to DIN 1587 specifications, these fasteners feature a high-profile dome that completely encloses the end of a bolt or threaded stud. This not only prevents injury from sharp threads but also protects the fastening point from dust, moisture, and corrosive elements.
As a professional cap nut factory, we provide high-precision fasteners in a variety of materials, including 316 Stainless Steel for harsh environments and Chrome-Plated Steel for a high-mirror decorative finish on motorcycles and furniture.
- Enhanced Safety: The smooth, rounded dome eliminates the risk of snags or scratches from exposed bolt ends, making them essential for playground equipment and medical furniture.
- Corrosion Resistance: Our Stainless Steel SS316 cap nuts offer maximum protection in marine and chemical processing environments.
- High-End Decorative Finish: Available in Polished Chrome and Solid Brass, providing an elegant, professional look for automotive wheels and architectural hardware.
- Standardized Precision: Fully compliant with DIN 1587 dimensions, ensuring a perfect fit with standard metric bolts from M3 to M24.
Use the chart below to find the correct metric cap nut dimensions for your assembly requirements.
| Thread Size | Width Across Flats (s) | Total Height (h) | Dome Dia (dk) |
|---|---|---|---|
| M6 | 10.0 mm | 12.0 mm | 9.5 mm |
| M8 | 13.0 mm | 15.0 mm | 12.5 mm |
| M10 | 17.0 mm | 18.0 mm | 16.0 mm |
| M12 | 19.0 mm | 22.0 mm | 18.0 mm |
| M16 | 24.0 mm | 28.0 mm | 23.0 mm |
Our M3-M24 Dome Nuts are essential across various high-visibility sectors:
- Automotive & Motorcycle: Used on wheel studs, license plate frames, and engine covers for a custom, polished look.
- Industrial Machinery: Protecting external bolts on equipment panels from environmental debris.
- Furniture Manufacturing: Providing a safe and decorative finish on cribs, shelving, and office desks.
- Marine Engineering: SS316 Cap Nuts are used in deck railings and rigging for salt-water rust resistance.
Q: What is the difference between DIN 1587 and DIN 917?
A: DIN 1587 is the standard “High Type” cap nut with a full dome. DIN 917 is the “Low Profile” or “Flat” cap nut, used where height clearance is limited.
Q: Can you provide M20 or M24 cap nuts in Hot Dip Galvanized?
A: Yes, we provide HDG Cap Nuts for heavy-duty outdoor construction and bridge building to ensure long-term weather resistance.
Source M3-M24 Cap Nuts from a Professional Manufacturer
Seeking bulk DIN 1587 Acorn Nuts with premium finishes and guaranteed quality? We support OEM customization and global wholesale orders. Contact us today for a free quote and technical samples!
