S-91819A170 1"-8 ASME B1.1, ASME B18.2.2, SAE J995 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional strength and reliability with Grade 8 steel construction, ideal for high-stress industrial applications
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
• Precise coarse threading (1"-8 UNC) ensures quick installation and secure fastening in demanding conditions
• Compliance with major industry standards including ASME B1.1, ASME B18.2.2, and SAE J995 for guaranteed performance
• Class 2B thread fit delivers consistent engagement and vibration resistance in right-hand threaded assemblies
• Environmental regulation compliance with RoHS 3 and REACH, making them suitable for regulated industries
• Standard external hex drive design allows for easy installation using common wrench tools

Professional Applications & Engineering Value

This Grade 8 steel hex nut with zinc yellow-chromate plating addresses critical industrial fastening challenges where corrosion and high tensile stress are concerns. The 1"-8 UNC coarse thread configuration provides excellent engagement in materials prone to galling, while the Class 2B thread fit maintains consistent clamping force under vibration. Engineered for heavy-duty applications in construction equipment, automotive assemblies, and machinery manufacturing, these nuts deliver reliable performance where failure is not an option. The combination of high-strength material and protective plating ensures long-term integrity in exposed or chemically aggressive environments.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit and manufactured in accordance with ASME B1.1, ASME B18.2.2, and SAE J995 specifications. The nut features a standard hex profile measuring 1 1/2" across flats and 55/64" in height. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications.