S-90854A164 M8 x 20 mm ISO 4017, DIN 933 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and reliability with Class 10.9 rating and 150,000 psi tensile strength, ensuring secure fastening in demanding applications.
• Superior corrosion resistance provided by the zinc yellow-chromate plating, extending service life in harsh industrial environments.
• High hardness and durability with Rockwell C32 hardness, resisting wear and deformation under heavy loads.
• Easy and efficient installation thanks to the external hex drive and coarse M8 x 1.25mm thread, allowing for quick assembly with standard tools.
• Full thread engagement along the 20mm length, offering maximum grip and uniform stress distribution in connected materials.
• Precise and standardized fit with Class 6h thread fit and compliance to ISO 4017 / DIN 933, ensuring interchangeability and consistent performance.
• Versatile heavy-duty application in construction, automotive, and machinery due to robust steel material and metric coarse thread design.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this M8 hex head screw delivers outstanding performance where failure is not an option. The Class 10.9 high-strength steel construction, combined with a fully threaded coarse metric thread (M8 x 1.25mm), ensures superior load distribution and vibration resistance in structural assemblies, automotive components, and machinery. The zinc yellow-chromate plating provides a durable barrier against corrosion, significantly reducing maintenance needs in exposed or high-moisture environments. With an external hex drive for easy torque application, these screws streamline installation while meeting rigorous ISO 4017 and DIN 933 standards, making them a trusted choice for engineers seeking reliability, efficiency, and long-term durability in critical fastening solutions.

Specification Summary & Compliance

This hex head screw features precise M8 x 1.25mm coarse thread with Class 6h thread fit and is fully threaded over a 20mm length. It complies with ISO 4017 and DIN 933 specifications for dimensional accuracy and performance. The fastener is manufactured from high-strength steel, achieving a tensile strength of 150,000 psi and Rockwell C32 hardness, and meets common industry requirements for quality and safety in industrial use.