DIN 529 M6-M20 304 Stainless Steel Expansion bolts Heavy Duty Wedge Anchors for Concrete Custom Lengths Available

What Are Expansion Bolts?

Expansion bolts are mechanical fasteners designed to secure objects to solid base materials like concrete, brick, or stone. They work by expanding against the walls of a pre-drilled hole as a nut is tightened, creating a secure mechanical hold.

Materials

• Carbon Steel (Grades 4.8, 5.8, 8.8)

• Stainless Steel (A2/304, A4/316)

• Alloy Steel (e.g., 42CrMo4)

Surface Finishes

• Zinc Plated (Electroplated)

• Hot-Dip Galvanized (HDG)

• Geomet / Dacromet Coating

• Black Oxide

• Plain (Oil-Coated)

Specifications

• Diameters: M6 to M24 (Metric); 1/4″ to 3/4″ (Imperial).

• Lengths: 50mm to 400mm (2″ to 16″).

• Key Standard: DIN 2510 (Expansion bolts with reduced shaft).

Applications

• Securing machinery to concrete floors.

• Fixing structural steel columns and brackets.

• Mounting handrails, barriers, and heavy equipment.

• Connecting components in turbines and compressors (DIN 2510 type).

Best Practice Case Example

• Scenario: Securing a 10-ton conveyor system to a concrete factory floor.

• Selected Product: M16 x 150mm Wedge Anchor.

• Material: Grade 8.8 Carbon Steel.

• Finish: Zinc Plated.

• Installation Data: Requires 16mm drill hole with 110mm minimum embedment depth.

• Performance: Provides verified pull-out load of approximately 27 kN (2,750 kgf) in C20/25 concrete, ensuring safe and vibration-resistant operation.