S-91280A087 M8 x 40 mm ISO 4017, DIN 933 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior load-bearing capacity with Class 8.8 strength rating and 110,000 psi tensile strength for reliable performance in demanding applications
• Enhanced durability and wear resistance thanks to Rockwell C21 hardness and high-quality steel construction
• Optimal grip and easy installation with external hex head design providing secure tool engagement and efficient assembly
• Excellent thread engagement and vibration resistance through coarse 1.25 mm pitch threading and Class 6g thread fit tolerance
• Maximum fastening coverage with fully threaded 40mm length ensuring consistent holding power along the entire fastener
• Global compatibility and interchangeability with ISO 4017 DIN 933 standard compliance for seamless integration into metric systems
• Environmentally responsible manufacturing meeting RoHS 3 and REACH regulations for sustainable procurement

Professional Applications & Engineering Value

These M8 hex head screws deliver exceptional engineering value in industrial settings where vibration resistance and structural integrity are paramount. The Class 8.8 strength grade combined with coarse thread spacing provides superior clamping force in machinery assembly, automotive components, and structural steel connections. The fully threaded metric design ensures maximum thread contact area, distributing stress evenly and preventing loosening under dynamic loads. Manufactured from high-grade steel with precise Class 6g thread fit, these industrial screws maintain dimensional accuracy for consistent performance in high-stress applications, reducing maintenance frequency and downtime in production environments.

Specification Summary & Compliance

This M8 x 1.25 x 40mm hex head screw features precise Class 6g thread tolerance with right-hand coarse threading (1.25 mm pitch) and full 40mm thread coverage. Manufactured to ISO 4017 DIN 933 standards with Class 8.8 strength rating (110,000 psi tensile strength, Rockwell C21 hardness). Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.