S-91280A728 M12 x 60 mm ISO 4014, DIN 931, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior tensile strength with Class 8.8 rating (110,000 PSI) ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Enhanced corrosion resistance from zinc plating protects against rust and environmental damage, extending service life in harsh industrial settings.
• Precise metric coarse threading (M12 x 1.75mm) with Class 6h fit allows for quick, secure installation and consistent engagement in various materials.
• Durable steel construction with Rockwell C21 hardness provides excellent wear resistance and maintains integrity under repetitive loads.
• External hex drive design offers easy tool access and high torque capability, speeding up assembly and disassembly processes.
• Partial threading on a 60mm length provides optimal grip and shear strength, ideal for applications requiring controlled clamping force.
• Compliance with international standards including ISO 4014 and DIN 931 ensures interchangeability and quality consistency across global projects.

Professional Applications & Engineering Value

This M12 hex head screw is engineered to address critical fastening challenges in heavy-duty industrial applications, such as machinery assembly, structural frameworks, and automotive components. The Class 8.8 steel construction delivers high tensile strength and fatigue resistance, preventing loosening under vibration and dynamic loads. With a coarse thread metric design (1.75mm pitch) and partial threading, it ensures rapid installation and reliable grip in thick materials or pre-tapped holes, reducing assembly time and minimizing strip-out risks. The zinc plated finish adds a protective barrier against moisture and chemicals, making it suitable for outdoor or corrosive environments. By meeting ISO 4014 and DIN 931 specifications, this screw provides consistent dimensional accuracy and performance, supporting efficient maintenance and repair operations in sectors like manufacturing, construction, and equipment maintenance.

Specification Summary & Compliance

This fastener adheres to precise metric dimensions with a thread size of M12, pitch of 1.75mm, and length of 60mm, featuring a Class 6h thread fit for tight tolerance and secure fastening. It conforms to ISO 4014 and DIN 931 standards, ensuring compatibility with global engineering requirements. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and restricted substance control for sustainable industrial use.