S-91423A420 M56 DIN 934 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional Load-Bearing Capacity: Class 8 strength grade ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in heavy machinery and structural applications.
• Precision Fine Threading: M56x4mm fine thread pitch provides superior vibration resistance and improved clamping force distribution compared to coarse thread alternatives, enhancing joint integrity.
• Standardized Compatibility: Manufactured to DIN 934 specifications guarantees dimensional accuracy and interchangeability with other metric components, simplifying procurement and assembly processes.
• Durable Steel Construction: High-quality steel material offers excellent tensile strength and wear resistance, ensuring long-term reliability in demanding industrial environments.
• Optimized Thread Fit: Class 6H thread tolerance ensures smooth engagement with mating bolts while maintaining secure fastening, minimizing assembly issues and rework.
• Environmental Compliance: REACH and RoHS 3 certifications confirm compliance with international environmental regulations, making this nut suitable for global supply chains and sensitive applications.
• Heavy-Duty Design: 85mm width and 45mm height provide substantial wrenching surfaces for secure installation, even in high-torque applications requiring substantial clamping force.

Professional Applications & Engineering Value

This heavy-duty M56 hex nut addresses critical engineering challenges in industrial settings where vibration resistance, load distribution, and long-term reliability are paramount. The Class 8 steel construction combined with fine metric threading (M56x4mm) provides superior performance in applications subject to dynamic loads and thermal cycling, such as heavy machinery bases, structural steel connections, and large-scale equipment assembly. The external hex drive style ensures compatibility with standard tools while the DIN 934 compliance guarantees dimensional consistency across international projects. Particularly valuable as a metric coarse thread alternative, this nut's fine pitch design significantly reduces the likelihood of loosening under vibration, making it ideal for mining equipment, construction machinery, and industrial processing systems where maintenance downtime must be minimized.

Specification Summary & Compliance

This metric hex nut features precise M56x4mm fine threading with Class 6H thread fit tolerance according to ISO standards, ensuring compatibility with corresponding metric bolts. Manufacturing follows DIN 934 specifications for dimensional accuracy, with external hex dimensions of 85mm width and 45mm height. The fastener meets Class 8 strength requirements and demonstrates compliance with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental directives, confirming suitability for regulated industrial applications worldwide.