S-91028A419 M8 JIS B 1181 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel coating for extended service life in demanding environments
• Superior load-bearing capacity with Class 8 strength grade, ensuring reliable performance in heavy-duty applications
• Precision thread engagement with Class 6H thread fit providing consistent, vibration-resistant connections
• Industry-standard compatibility meeting JIS B 1181 specifications for seamless integration into metric assemblies
• Optimized installation efficiency featuring standard external hex drive for easy wrench access and torque application
• Coarse thread advantage with 1.25 mm pitch enabling quicker assembly and reduced cross-threading risks
• Environmental compliance assurance with RoHS 3 (2015/863/EU) compliance for responsible manufacturing standards

Professional Applications & Engineering Value

Engineered for industrial fastening systems, these M8 hex nuts deliver critical performance where vibration resistance and structural integrity are paramount. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, machinery, and automotive assemblies exposed to moisture and harsh conditions. With coarse metric threading (1.25 mm pitch), installation becomes significantly faster while minimizing the risk of thread damage during high-volume production. The Class 8 strength rating ensures these JIS B 1181 compliant nuts maintain clamp force under dynamic loads, making them ideal for construction equipment, material handling systems, and heavy machinery where fastener failure is not an option. The standardized 12mm width and 6.5mm height profile guarantee compatibility with common wrench sets and automated assembly tools.

Specification Summary & Compliance

This metric hex nut features M8 x 1.25 mm coarse threads with Class 6H thread tolerance per JIS B 1181 standards. The external hex drive configuration (12mm width, 6.5mm height) conforms to standard hex profile dimensions. Manufactured from zinc-plated steel with Class 8 strength classification, these right-hand thread nuts comply with RoHS 3 (2015/863/EU) environmental directives for restricted substance control.