Protects Exposed Threads
The closed dome design completely covers the protruding bolt end, preventing thread damage, corrosion, and contamination from dust or moisture.
DIN 1587 Hexagon Domed Cap Nut
- Standard: DIN 1587
- Material: Stainless Steel
- Thread Size: M5-M20
- Surface Treatment: Plain, Zinc Plated
- Min Order: 5000pcs
- Sample: Free sample (after quote)
- Delivery time: 30 – 45 Days
Product Overview
Product Application
DIN 1587 Dome Nut, also known as Acorn Nut, Cap Nut, or Domed Hex Nut, is a hexagonal nut with a rounded closed top designed to cover exposed bolt threads. It provides a clean appearance while protecting threads from dust, moisture, and accidental contact. DIN 1587 defines the dimensions and tolerances for metric hexagon domed cap nuts, covering coarse and fine pitch threads from M4 to M24.
Manufactured from stainless steel, carbon steel, or brass, DIN 1587 nuts are widely used in applications where both functional protection and aesthetic appearance are required.
Draw
Specification
DIN 1587 vs DIN 986
DIN 1587 Dome Nut
- Non-locking all-metal cap nut with a closed dome end to protect exposed threads.
- Provides excellent mechanical durability, corrosion resistance, and a clean finished appearance.
- Suitable for applications requiring thread protection, safety, and aesthetic requirements.
DIN 986 Nylon Insert Dome Nut
- Self-locking dome nut with an integrated nylon insert.
- The nylon ring generates prevailing torque to resist loosening under vibration and dynamic loads.
- Suitable for applications requiring enhanced locking performance and vibration resistance.
Key Difference:
DIN 1587 provides thread protection and surface finishing, while DIN 986 provides additional prevailing torque locking performance through a nylon insert.
Product Advantages
Safe and Smooth Surface
The rounded cap eliminates sharp exposed threads, reducing the risk of scratches or injuries in applications involving frequent human contact.
Clean and Professional Appearance
The polished dome shape provides a finished appearance, making it ideal for visible assemblies where appearance matters.
Common Questions
What is DIN 1587 nut used for?
DIN 1587 is used to cover exposed bolt threads, improving safety, corrosion protection, and appearance in mechanical assemblies.
Is DIN 1587 the same as an acorn nut?
Yes. DIN 1587 is commonly known as an acorn nut, dome nut, or domed cap nut because of its rounded closed-end design.
What is the difference between DIN 1587 and DIN 986?
DIN 1587 is a standard metal dome nut, while DIN 986 adds a nylon insert for locking performance and vibration resistance.
Can DIN 1587 nuts be customized?
Yes. Manufacturers can provide customized materials, finishes, thread types, and special packaging according to customer requirements.
