S-91280A289 M8 x 100 mm ISO 4014, DIN 931 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 8.8 strength grade and 110,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance with black steel construction providing enhanced durability in industrial environments
• Optimized torque transmission through external hex drive and 13mm head width for secure installation and removal
• Secure fastening performance with Class 6g thread fit and M8 coarse threading ensuring vibration resistance and easy alignment
• Versatile application design featuring partially threaded construction with 22mm minimum thread length for precise clamping control
• Industry-standard compliance meeting ISO 4014/DIN 931 specifications for guaranteed interchangeability and quality
• Environmental responsibility with RoHS 3 and REACH compliance for safe use across regulated industries

Professional Applications & Engineering Value

This M8 hex head screw delivers exceptional engineering value through its Class 8.8 steel construction and metric coarse threading, specifically designed to address common industrial fastening challenges. The partially threaded design with 22mm minimum thread length provides optimal stress distribution, preventing joint loosening under vibration while maintaining precise clamping force. The external hex drive and 13mm head width ensure maximum torque application without stripping, making it ideal for heavy machinery, structural steel connections, and automotive assemblies. With Rockwell C21 hardness and 110,000 psi tensile strength, this fastener withstands extreme mechanical stresses while the black finish offers additional corrosion protection for long-term reliability in harsh operating conditions.

Specification Summary & Compliance

This hex head screw features precise M8 x 1.25mm coarse thread with Class 6g tolerance following ISO 4014/DIN 931 manufacturing standards. The 100mm length with partial threading maintains dimensional accuracy for consistent performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance across international markets. The Class 8.8 strength grade certification guarantees mechanical properties meet international quality standards for industrial applications.