S-91280A905 M20 x 200 mm ISO 4014, DIN 931, SAE J1199, 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 extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
• Precision Class 6h thread fit and coarse M20x2.5 thread design provide secure, vibration-resistant connections for heavy machinery and structural assemblies.
• External hex drive and hex head allow for easy installation and high torque application with standard tools, improving assembly efficiency.
• Partially threaded shank offers optimal clamping force distribution, ideal for applications requiring precise joint stability.
• Compliance with ISO 4014, DIN 931, and SAE J1199 guarantees consistent quality and interchangeability, supporting global engineering standards.
• RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for international supply chains.

Professional Applications & Engineering Value

This M20 hex head screw is engineered to address critical challenges in heavy-duty industrial settings, where vibration resistance and long-term durability are paramount. The zinc plated steel construction provides a protective barrier against corrosion, making it suitable for outdoor machinery, construction frameworks, and automotive assemblies exposed to moisture. With a Class 8.8 strength grade and Rockwell C21 hardness, it maintains integrity under dynamic loads, preventing loosening in equipment like conveyor systems or structural supports. The metric coarse thread (M20x2.5) and partial threading enable faster installation and reduced stress concentration, streamlining assembly in high-volume production while meeting ISO 4014 and DIN 931 specifications for reliability.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including a Class 6h thread fit for consistent engagement and ISO 898 mechanical properties. It meets ISO 4014, DIN 931, and SAE J1199 specifications for hex head screws, ensuring global interoperability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it supports sustainable and safe manufacturing practices without hazardous substances.