S-97619A220 3/8"-16 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance in harsh environments thanks to 316 stainless steel construction
• Superior mechanical strength for high-stress applications with ASTM Grade 8M certification
• Enhanced load distribution and reduced surface pressure from the extra-wide hex nut profile
• Reliable and quick assembly with coarse UNC threading and Class 2B fit for consistent engagement
• Durable external hex drive allows for high-torque installation with standard tools
• Compliance with global safety standards including RoHS 3 and REACH for industrial use
• Long-term performance backed by ASTM A194 manufacturing specifications

Professional Applications & Engineering Value

This heavy-duty hex nut is engineered to solve critical challenges in demanding industrial settings. The Grade 8M 316 stainless steel provides outstanding resistance to corrosion, pitting, and chemical exposure, making it ideal for marine, chemical processing, and outdoor infrastructure. The 3/8"-16 UNC coarse thread with Class 2B fit ensures rapid, secure fastening even in high-vibration environments, reducing the risk of loosening. The extra-wide profile distributes clamping force more effectively, preventing joint failure and surface damage. Suitable for structural assemblies, heavy machinery, and piping systems, this nut delivers reliability where failure is not an option.

Specification Summary & Compliance

This hex nut meets precise dimensional standards with a Class 2B thread fit and UNC coarse thread (3/8"-16). Manufacturing adheres to ASTM A194 for heavy-duty nuts, ensuring consistent quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for regulated industrial and international markets. Dimensions include a width of 11/16" and height of 23/64".