S-91280A019 M18 x 110 mm ISO 4014, DIN 931 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 110,000 psi tensile strength and Class 8.8 grade, ensuring reliable performance in demanding applications
• Superior corrosion resistance through zinc plating, extending service life in harsh industrial environments
• Optimized thread engagement with coarse 2.5mm pitch and partial threading for secure fastening and reduced installation time
• Precise mechanical properties with Rockwell C21 hardness, maintaining structural integrity under heavy loads
• Standardized external hex drive and M18 metric sizing for compatibility with common tools and international equipment
• Regulatory compliance assurance meeting ISO 4014 manufacturing standards and environmental directives (RoHS 3, REACH)
• Reduced vibration loosening risk with right-hand coarse threading providing stable connections in dynamic applications

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these M18 hex head screws deliver critical performance where structural integrity matters most. The Class 8.8 steel construction provides the necessary tensile strength for machinery assembly, structural steel connections, and equipment manufacturing. The partial threading design concentrates thread engagement where needed most, preventing unnecessary friction in shank areas while maintaining full clamping force. Zinc plating offers essential corrosion protection in manufacturing facilities, outdoor installations, and high-humidity environments. With coarse metric threading and external hex drive, these fasteners enable rapid installation and removal while resisting vibration-induced loosening in conveyor systems, heavy equipment, and industrial frameworks.

Specification Summary & Compliance

Manufactured to ISO 4014 (DIN 931) specifications with Class 6h thread fit ensuring dimensional accuracy and interchangeability. The metric coarse thread (M18 x 2.5mm) provides optimal engagement for general industrial use. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming restriction of hazardous substances. Partially threaded design with 42mm minimum thread length on 110mm overall length provides engineered thread placement for specific clamping requirements.