S-91280A778 M14 x 30 mm ISO 4017, DIN 933, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 110,000 psi ensures reliable performance in high-stress applications, preventing fastener failure.
• Superior corrosion resistance from the zinc plating extends service life in harsh or outdoor industrial environments.
• High-strength Class 8.8 steel construction with Rockwell C21 hardness provides excellent durability and resistance to wear and deformation.
• Coarse M14x2mm thread with Class 6h fit offers quick and easy installation with reliable grip and reduced risk of cross-threading.
• Fully threaded design allows for maximum adjustability and holding power along the entire 30mm length.
• External hex drive and hex head enable high-torque tightening with standard tools, speeding up assembly processes.
• Compliance with major international standards including ISO 4017 and DIN 933 guarantees consistent quality and interchangeability.

Professional Applications & Engineering Value

This M14 hex head screw is engineered to solve critical challenges in heavy-duty assembly, where vibration, dynamic loads, and environmental exposure can compromise joint integrity. The Class 8.8 steel provides a robust core that withstands significant tensile and shear forces, making it ideal for construction machinery, automotive frames, and industrial equipment. The coarse metric thread ensures rapid installation even in materials with minor inconsistencies, while the zinc plating defends against rust and corrosion, reducing maintenance needs. Fully threaded for uniform stress distribution, this fully threaded bolt delivers consistent clamping force, enhancing the longevity and safety of your critical connections in demanding engineering applications.

Specification Summary & Compliance

This fastener features a Class 6h thread fit per ISO metric standards, ensuring precise dimensional accuracy for reliable engagement. It is manufactured in compliance with ISO 4017 and DIN 933 specifications, guaranteeing consistent performance. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.