S-91310A113 M18 x 55 mm ISO 4014, DIN 931 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 10.9 strength grade and 150,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance and durability thanks to the steel construction with black finish and Rockwell C32 hardness rating
• Easy installation and secure fastening with external hex drive design and coarse 2.5mm pitch threads for quick assembly
• Precise thread engagement with Class 6g thread fit ensuring consistent performance and vibration resistance
• Optimized weight distribution through partial threading design that maintains strength while reducing material usage
• Global compliance assurance meeting ISO 4014/DIN 931 standards plus RoHS 3 and REACH environmental regulations
• Versatile industrial application with M18 metric sizing and 55mm length suitable for various heavy-duty fastening requirements

Professional Applications & Engineering Value

This M18 hex head screw delivers critical engineering solutions for industrial applications where failure is not an option. The Class 10.9 steel construction provides exceptional tensile strength (150,000 psi) that withstands extreme loads in construction, machinery assembly, and structural frameworks. The coarse pitch metric threading (2.5mm) ensures rapid installation while maintaining secure fastening, significantly reducing assembly time in production environments. With partial threading and precise Class 6g thread fit, this fastener offers optimal stress distribution and vibration resistance, preventing loosening in dynamic applications. The external hex drive design allows for high torque application using standard tools, making it ideal for maintenance and repair operations across various industrial sectors.

Specification Summary & Compliance

This metric hex head screw features M18 x 2.5mm coarse thread configuration with Class 6g thread tolerance for precision fit. Manufactured to ISO 4014/DIN 931 specifications, the fastener delivers consistent dimensional accuracy and performance. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global markets. With 37mm minimum thread length and 55mm overall length, this partially threaded screw maintains strict quality control throughout production to meet industrial fastening requirements.