S-97619A990 2"-8 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance from 316 stainless steel construction, ideal for harsh environments including marine and chemical processing
• Exceptional load-bearing capacity with ASTM Grade 8M strength rating, ensuring reliable performance under high-stress conditions
• Enhanced wrenching surface due to extra wide profile (3 1/8" width), providing better torque application and reduced slipping risk
• Precise thread engagement with 2"-8 UNF fine thread and Class 2B fit, delivering vibration resistance and secure fastening
• Long-term durability through ASTM A194 compliance, guaranteeing consistent quality and material integrity
• Environmental compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industrial applications
• Optimized for heavy-duty applications with right-hand thread direction and external hex drive for standard tool compatibility

Professional Applications & Engineering Value

This heavy-duty hex nut addresses critical engineering challenges in demanding industrial settings where corrosion and mechanical stress compromise fastener integrity. The 316 stainless steel composition provides exceptional resistance to pitting and crevice corrosion, making it ideal for offshore platforms, chemical processing equipment, and marine applications. The extra wide profile distributes clamping force more effectively, reducing point loading and preventing joint relaxation in vibrating machinery. With 2"-8 UNF fine threads offering superior resistance to loosening under dynamic loads, this nut maintains secure connections in heavy machinery, structural steel assemblies, and high-pressure piping systems. The combination of ASTM Grade 8M strength and Class 2B thread fit ensures reliable performance in critical applications where failure is not an option.

Specification Summary & Compliance

This hex nut features precise 2"-8 UNF fine threads with Class 2B thread fit per UN standards, ensuring proper engagement with mating components. Manufacturing complies with ASTM A194 specifications for dimensional accuracy and material properties. The fastener meets ASTM Grade 8M mechanical requirements for heavy-duty applications. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming restriction of hazardous substances. Dimensions include 3 1/8" width and 2 1/64" height with right-hand thread direction in the inch measurement system.