S-90854A314 M20 x 55 mm ISO 4017, DIN 933 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum Load-Bearing Capacity: Class 10.9 strength grade and 150,000 psi tensile strength ensure reliable performance in high-stress applications, reducing risk of fastener failure.
• Superior Corrosion Resistance: Zinc yellow-chromate plating provides excellent protection against rust and environmental degradation, extending service life in harsh industrial conditions.
• Precision Thread Engagement: Class 6h thread fit and coarse 2.5mm pitch enable quick assembly and secure fastening with reduced cross-threading risks.
• High-Torque Installation Capability: External hex drive with 30mm head width offers superior grip for powerful wrenching without stripping.
• Full Thread Coverage: 55mm fully threaded design ensures maximum grip length and uniform stress distribution across connected components.
• Industry Standard Compliance: Manufactured to ISO 4017/DIN 933 specifications guarantees dimensional accuracy and interchangeability with existing metric systems.
• Environmental Responsibility: RoHS 3 and REACH compliance demonstrates commitment to regulatory standards and workplace safety.

Professional Applications & Engineering Value

This M20 hex head screw delivers exceptional engineering value through its Class 10.9 steel construction and zinc yellow-chromate plating, specifically engineered to address common industrial challenges. The fully threaded metric design with coarse 2.5mm pitch provides rapid installation in heavy machinery, structural steel frameworks, and automotive assemblies where vibration resistance and high clamp loads are critical. The external hex drive configuration allows for high-torque application with standard tools, while the Rockwell C32 hardness maintains thread integrity under repeated stress cycles. Ideal for construction equipment, industrial manufacturing, and infrastructure projects requiring ISO 4017/DIN 933 compliant fasteners that combine 150,000 psi tensile strength with superior corrosion protection.

Specification Summary & Compliance

This metric hex head screw features M20x2.5mm coarse threads with Class 6h thread fit tolerance for precise engagement. Manufacturing conforms to ISO 4017/DIN 933 standards ensuring dimensional accuracy and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming absence of restricted substances. With 55mm length and fully threaded configuration, it maintains consistent performance across industrial applications requiring high-strength metric fastening solutions.