S-91280A013 M20 x 60 mm ISO 4017, DIN 933, SAE J1199, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Tensile Strength: With a tensile strength of 110,000 psi, these screws provide reliable, heavy-duty fastening that resists failure under high-stress conditions.
• Superior Corrosion Resistance: The zinc plating finish offers enhanced protection against rust and corrosion, extending the service life of your assemblies in harsh environments.
• High Hardness for Durability: Rockwell C21 hardness ensures the screw maintains its shape and thread integrity, reducing wear and the risk of stripping during installation and use.
• Precision Thread Fit: Class 6h thread fit guarantees consistent, secure engagement with mating parts, minimizing loosening and improving joint reliability.
• Broad Standard Compliance: Meets ISO 4017, DIN 933, SAE J1199, and ISO 898 standards, ensuring interchangeability and performance consistency in global industrial applications.
• Full Threading for Maximum Grip: Fully threaded design allows for adjustable engagement depth and uniform clamping force along the entire length.
• Environmental & Safety Compliance: RoHS 3 and REACH compliant, making them safe for use in regulated industries and reducing environmental impact.

Professional Applications & Engineering Value

This M20 hex head screw is engineered to address critical challenges in heavy machinery, structural frameworks, and industrial equipment where vibration, dynamic loads, and environmental exposure are common. The Class 8.8 steel construction, combined with a zinc plated finish, provides a robust solution that resists shear forces and corrosion, ensuring long-term integrity in demanding settings like construction, automotive assembly, and manufacturing plants. The coarse thread and external hex drive facilitate quick, secure installation with standard tools, reducing assembly time while maintaining high tensile strength and fatigue resistance. By adhering to international standards such as ISO 4017 and DIN 933, these screws offer reliable performance and compatibility, minimizing downtime and maintenance costs in professional applications.

Specification Summary & Compliance

This screw features precise M20x2.5 mm coarse threads with a Class 6h thread fit for accurate mating and ISO-standard tolerances. It is manufactured in compliance with ISO 4017, DIN 933, SAE J1199, and ISO 898 specifications, ensuring dimensional consistency and mechanical performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and safety-focused industrial use.