S-91280A204 M12 x 30 mm ISO 4017, DIN 933 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior tensile strength of 110,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure
• Class 8.8 strength grade provides excellent durability and load-bearing capacity for demanding industrial environments
• Rockwell C21 hardness offers enhanced resistance to wear and deformation, extending service life
• Fully threaded design allows for maximum grip and uniform stress distribution along the entire fastener length
• External hex drive with standard 19mm head enables quick installation and removal with common tools
• Class 6g thread fit ensures precise engagement and consistent performance in metric assemblies
• Black steel construction provides basic corrosion resistance while maintaining cost-effectiveness

Professional Applications & Engineering Value

These M12 hex head screws deliver exceptional engineering value through their Class 8.8 steel construction and metric coarse thread design. The combination of 110,000 psi tensile strength and Rockwell C21 hardness makes them ideal for structural applications where vibration resistance and mechanical stability are critical. The fully threaded configuration ensures maximum thread engagement in various material thicknesses, while the external hex drive facilitates efficient installation in confined spaces. These industrial fasteners effectively address common challenges in machinery assembly, construction, and equipment manufacturing by providing reliable clamping force and resistance to loosening under dynamic loads.

Specification Summary & Compliance

This metric hex head screw features M12 x 1.75mm coarse thread with Class 6g thread fit tolerance and 30mm length. Manufactured to ISO 4017 specifications (equivalent to DIN 933) with right-hand threading. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial applications.