Precision Corrosion Resistance Euro Bolt Smooth Interior Finish

Product Description

European-style screws are special fasteners that comply with German Industrial Standards (DIN), specifically designed for assembling elevator buckets (scallops) with conveyor belts. Their unique structural design features the following key characteristics:

Head Design:

• Countersunk (recessed) head structure with two protrusions (anti-rotation lugs) at the base to prevent loosening during installation.

Compatibility:

• The head shape matches specific grooves and requires dedicated mounting holes to ensure precise positioning and secure connection.

Dimensional Specifications:

• Thread sizes: M6, M8, M10, M12 (with pitches of 1mm, 1.25mm, 1.5mm, and 1.75mm respectively)

• Head diameters: 20mm (M6), 28mm (M8), 35mm (M10), 42mm (M12)

• Nominal lengths: 20mm-60mm (customizable as needed)

Material Options:

• Carbon steel: Q235, 45# steel (Grade 4.8-8.8)

• Stainless steel: SUS304 (Grade A2-70, corrosion-resistant)

Surface Treatments:

• Zinc plating (blue/white zinc, color zinc)

• Black oxide coating

• Dacromet coating

• Natural finish
  (Adaptable to various environmental requirements)

Key Features

1. Anti-loosening Design:

• Dual protrusion structure (anti-rotation lugs) at the base effectively prevents rotation during tightening, ensuring long-term secure fastening without loosening.

• Precision fit between the countersunk head and mating groove prevents displacement caused by vibration or impact.

2. High Strength & Durability:

• Available in multiple strength grades from 4.8 to 10.9 to meet diverse load requirements (e.g., 10.9 grade offers tensile strength up to 1000MPa).

• Alloy steel materials  suit high-stress environments, while stainless steel (SUS304) provides corrosion resistance for humid/chemical applications.

3. Standardization & Interchangeability:

• Strict compliance with DIN standards ensures thread tolerance, dimensional accuracy, and interchangeability for easy maintenance/replacement.

• Installation Convenience:

• Dedicated groove design simplifies positioning, enabling quick installation with matching tools to reduce assembly time.

Applications

1. Bucket Elevators:

Specially designed to secure elevator buckets to belts, withstanding dynamic loads from material handling (e.g., grain, cement, ore transportation) during high-speed operation.

2. Industrial Conveying Equipment:
Used for structural connections in belt conveyors and chain conveyors, particularly in high-vibration environments (e.g., mining and metallurgical industries).

3. Heavy Machinery & Steel Structures:
Provides secure fastening for lifting equipment and port machinery (e.g., grabs, unloaders), requiring both impact resistance and corrosion protection.

4. Energy & Infrastructure Sector:
Ideal for high-standard applications including power plant conveyor systems, railway freight components, and bridge steel structures.

5. Food & Chemical Industries:
Stainless steel SUS304 variants meet hygiene and corrosion-resistance requirements for food processing equipment and chemical plant installations.

Common Specifications(Material:Carbon Steel-Zinc Plated,Stainless Steel)