S-91310A562 M8 x 90 mm ISO 4014, DIN 931 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure
• Class 10.9 strength grade provides superior load-bearing capacity for demanding industrial and machinery assemblies
• Rockwell C32 hardness offers excellent resistance to wear and deformation, extending service life in rugged environments
• Coarse 1.25mm pitch threading enables faster installation and removal while maintaining secure fastening in various materials
• Class 6g thread fit ensures precise engagement with mating components, minimizing vibration-induced loosening
• Partially threaded design allows for controlled clamping force distribution, ideal for applications requiring specific grip ranges
• External hex drive configuration provides high torque transmission capability with standard tools, simplifying maintenance procedures

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these M8 hex head screws deliver critical performance where vibration resistance and structural integrity are paramount. The Class 10.9 steel construction combined with Rockwell C32 hardness addresses common failure points in machinery, construction, and equipment manufacturing by providing exceptional resistance to shear forces and fatigue. The metric coarse thread with 1.25mm pitch ensures reliable engagement in both metallic and composite materials, while the partial threading allows engineers to precisely control clamping forces in bolted joints. These ISO 4014 DIN 931 compliant fasteners solve alignment and stability challenges in structural frameworks, automotive assemblies, and industrial machinery where precise thread fit and consistent performance under dynamic loads are essential requirements.

Specification Summary & Compliance

This M8 x 1.25 x 90mm fastener features Class 6g thread fit tolerance per metric standards and partial threading with minimum 22mm thread length. Manufactured to ISO 4014 DIN 931 specifications, it ensures dimensional accuracy and interchangeability. The product fully complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations regarding chemical safety, making it suitable for regulated industries and international supply chains.