DIN 985 Carbon Steel Cap Nuts Hex Base Dome Top Bolts For Protection Aesthetics

Cap Nuts Hex Base Dome Top Fasteners For Protection Aesthetics

Product Definition

Cap nuts are fasteners that integrate protective functionality and decorative appeal. Featuring an integrated “hexagonal base + dome - shaped top” design, they provide comprehensive coverage and protection for bolt ends.

Core Design & Functions

1. Structural Advantages
   • The hexagonal base works with standard tools (e.g., wrenches, sockets), enabling quick and easy installation.
   • The dome - shaped top fully covers exposed bolt threads: it hides burrs, stops impact damage, and keeps out dust and moisture to prevent thread rust.
2. Unity of Aesthetics & Protection
   The smooth dome surface gives assembly areas a neat, polished look. They’re perfect for situations where exposed bolts need both function and beauty (like furniture, equipment exteriors, automotive parts), getting rid of the roughness of visible threads.

Material & Performance

• Base Material: Made from high - strength carbon steel (or custom stainless steel) to ensure reliable fastening.
• Surface Treatment: Standard galvanization (nickel plating, Dacromet, etc., available as options) improves corrosion resistance, good for tough environments (humid, outdoor, etc.).
• Compatibility: Internal threads match standard bolts (GB, ISO, etc.), and sizes can be customized (e.g., M4 to M24).

Typical Applications

• Mechanical Equipment: Protect surface bolts and cut down on thread damage during maintenance.
• Furniture Assembly: Make exposed connections (e.g., tables, chairs, cabinets) look more elegant.
• Automotive/Motorcycle: Shield chassis and exterior bolts from mud, dirt, and rust.
• Decorative Projects: Give exposed fasteners (e.g., railings, display racks) a polished appearance.

Advantage Summary

Cap nuts combine protection (corrosion resistance, impact protection), aesthetics (thread hiding), and ease of use (hex - based installation) — making them the top pick for functional decorative fasteners.