S-97619A970 1 5/8"-8 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to premium 316 stainless steel construction
• Exceptional load distribution and reduced surface pressure with the extra wide hex profile design
• High mechanical strength and reliability for demanding applications, certified to ASTM Grade 8M standards
• Precise thread engagement with UN fine thread (1 5/8"-8) and Class 2B fit for secure, vibration-resistant connections
• Enhanced durability in industrial settings with right-hand threading compatible with standard assembly tools
• Regulatory compliance assurance meeting RoHS 3 and REACH environmental standards for safe usage
• Optimal wrench grip with external hex drive style for easy installation and maintenance in confined spaces

Professional Applications & Engineering Value

This extra wide hex nut in 316 stainless steel addresses critical challenges in heavy machinery, marine, and chemical processing industries where corrosion and high stress are prevalent. The UN fine thread (1 5/8"-8) with Class 2B fit ensures tight, reliable fastening that resists loosening under dynamic loads and vibration. Engineered to ASTM A194 and Grade 8M specifications, it provides consistent performance in structural assemblies, pipeline systems, and equipment requiring inch-system fasteners. The extra wide profile distributes clamping force more effectively, reducing the risk of damage to connected materials and extending service life in corrosive or high-temperature environments.

Specification Summary & Compliance

This hex nut features precision UN fine threads with Class 2B thread fit for consistent engagement. Manufactured in accordance with ASTM A194 and strength-rated as ASTM Grade 8M, it meets rigorous mechanical and dimensional standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial supply chains.