S-94036A225 M6 x 25 mm ISO 898-1, DIN 6921 Medium-Strength Metric Class 8.8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc yellow-chromate plating, extending service life in harsh industrial environments
• High tensile strength of 110,000 psi ensures reliable performance under heavy loads and vibration
• Class 8.8 strength grade provides consistent mechanical properties for critical fastening applications
• Flanged head design eliminates need for separate washers, reducing assembly time and parts inventory
• External hex drive allows for high torque application with standard tools, preventing stripping
• Coarse metric threading enables faster installation and better resistance to loosening in dynamic applications
• Partially threaded shank provides optimal clamp force distribution and prevents thread damage during installation

Professional Applications & Engineering Value

These M6 hex head screws deliver exceptional engineering value in demanding industrial settings where corrosion resistance and structural integrity are paramount. The zinc yellow-chromate plated steel construction provides superior protection against oxidation and chemical exposure, making them ideal for outdoor equipment, machinery frames, and automotive assemblies. The Class 8.8 strength rating combined with Rockwell C22 hardness ensures these metric fasteners maintain clamping force under sustained vibration and dynamic loads. The flanged design distributes pressure evenly across joined surfaces, preventing material deformation while the partial threading optimizes stress distribution along the fastener length. These industrial screws solve common fastening challenges in construction, manufacturing, and heavy equipment applications where reliability cannot be compromised.

Specification Summary & Compliance

This M6 x 1 mm hex head screw features Class 6g thread fit tolerance for precise engagement, with 25mm length and 18mm minimum thread length. Manufactured in compliance with ISO 898-1 and DIN 6921 standards, ensuring dimensional accuracy and mechanical properties. The product is REACH (EC 1907/2006) compliant and meets international specifications for metric coarse thread fasteners with external hex drive configuration.