S-91280A083 M8 x 20 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 corrosion resistance with black steel construction providing improved durability in industrial environments
• Optimal thread engagement with Class 6g thread fit ensuring secure fastening and vibration resistance
• Easy installation and removal with external hex drive design allowing for standard wrench access and efficient maintenance
• Full thread coverage along the 20mm length providing maximum grip and load distribution across connected components
• Industry-standard compatibility with M8 coarse thread (1.25mm pitch) meeting common metric fastener requirements
• Environmental compliance assurance with RoHS 3 and REACH compliance for safe use in regulated industries

Professional Applications & Engineering Value

These M8 hex head screws deliver exceptional engineering value through their Class 8.8 steel construction and precise metric coarse threading. The combination of 110,000 psi tensile strength and Rockwell C21 hardness ensures reliable performance in heavy-duty applications where vibration resistance and structural integrity are critical. The fully threaded design provides maximum contact surface area, distributing stress evenly to prevent joint failure in machinery, equipment frames, and structural assemblies. The external hex drive facilitates quick installation and maintenance in confined spaces, while the black finish offers additional protection against environmental factors. These fasteners are engineered to solve common industrial challenges including component slippage, corrosion-induced failure, and maintenance accessibility issues.

Specification Summary & Compliance

This hex head screw features M8 x 1.25mm coarse thread with Class 6g thread fit tolerance and 20mm fully threaded length. Manufactured to ISO 4017/DIN 933 specifications with Class 8.8 strength rating, ensuring dimensional accuracy and mechanical performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use. The right-hand thread direction and external hex drive conform to international metric fastener standards for broad compatibility across industrial applications.