S-98093A221 M8 x 18 mm ISO 898-1, DIN 6921 High-Strength Metric Class 10.9 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-phosphate steel coating for reliable performance in harsh industrial environments
• Superior load-bearing capacity with Class 10.9 strength grade and 150,000 psi tensile strength for heavy-duty applications
• Enhanced stability and vibration resistance through DIN 6921 flange design that eliminates need for separate washers
• Precise thread engagement with Class 6g thread fit and M8 x 1.25mm coarse thread for quick assembly and secure fastening
• Optimized torque transmission through external hex drive and 13mm head width for efficient installation with standard tools
• Full thread coverage along the 18mm length ensures maximum grip strength across the entire fastener
• Regulatory compliance assurance meeting ISO 898-1, RoHS 3, and REACH standards for global industrial applications

Professional Applications & Engineering Value

These M8 hex head screws with black-phosphate steel construction address critical engineering challenges in demanding environments. The Class 10.9 strength rating and 150,000 psi tensile strength provide reliable performance in heavy machinery, automotive assemblies, and structural applications where failure is not an option. The integrated DIN 6921 flange distributes clamping force evenly, preventing surface damage while eliminating the cost and complexity of separate washers. With fully threaded design and coarse 1.25mm pitch, these metric fasteners enable rapid installation in production lines while maintaining vibration resistance. The black-phosphate surface treatment creates a protective barrier against corrosion, extending service life in outdoor or chemically exposed settings where ordinary fasteners would degrade prematurely.

Specification Summary & Compliance

This M8 x 1.25mm metric screw features Class 6g thread fit tolerance and 18mm length with fully threaded configuration. Manufactured to ISO 898-1 standards with DIN 6921 flange specifications, ensuring dimensional accuracy and performance reliability. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety requirements for industrial components. With Rockwell C32 hardness and precise external hex drive geometry, these screws maintain structural integrity under high torque applications while facilitating efficient installation.