S-90386A107 M8 x 16 mm DIN 6921 Medium-Strength Metric Class 8.8 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional durability and corrosion resistance thanks to zinc-plated steel construction, ensuring long-lasting performance in harsh industrial environments.
• High tensile strength of 110,000 psi with Class 8.8 grade, providing reliable load-bearing capacity for demanding structural applications.
• Secure anti-loosening performance from the integrated flange and serrations, eliminating the need for separate washers and maintaining joint integrity under vibration.
• Easy installation and removal with an external hex drive and 13mm head width, allowing for high torque application with standard tools.
• Precise and reliable thread engagement due to Class 6g thread fit and M8x1.25mm coarse thread, ensuring consistent fastening in various materials.
• Full thread coverage along the 16mm length maximizes grip and distribution of clamping force across the entire fastened area.
• Compliance with international standards including DIN 6921, RoHS 3, and REACH, guaranteeing safety, quality, and environmental responsibility.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial and construction applications, this M8 hex head screw addresses critical needs for vibration resistance and structural stability. The zinc-plated steel material offers excellent corrosion protection, extending service life in outdoor or corrosive settings. Its flanged design with serrations provides a secure locking mechanism that prevents loosening under dynamic loads, reducing maintenance and failure risks. The fully threaded metric coarse thread ensures quick assembly and strong holding power in metals, plastics, and composites. Ideal for machinery, steel framing, and automotive assemblies, this Class 8.8 fastener delivers consistent performance where high tensile strength and reliability are non-negotiable.

Specification Summary & Compliance

This screw features precise Class 6g thread fit and M8x1.25mm coarse thread per metric standards, ensuring dimensional accuracy and compatibility. It conforms to DIN 6921 for flanged hex head screws and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, affirming its suitability for regulated industries. Manufactured to deliver 110,000 psi tensile strength and Rockwell C22 hardness, it supports robust engineering requirements with verified quality.