S-90519A896 2"-12 ASTM A108 Hex Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through extra fine 12 TPI threading that maintains secure connections in high-vibration environments
• Enhanced corrosion protection with black-oxide steel finish that withstands industrial conditions and extends service life
• Space-saving installation with thin profile design ideal for applications with limited clearance while maintaining full strength
• Reliable left-hand threading for specialized applications requiring reverse rotation security and safety-critical assemblies
• Precision thread engagement with UN Class 2B fit ensuring smooth installation and consistent torque performance
• Industrial-grade strength meeting Grade 2 specifications for dependable performance in demanding mechanical applications
• Regulatory compliance assurance with RoHS 3 and REACH compliance for global manufacturing and environmental standards

Professional Applications & Engineering Value

This left hand hex nut with extra fine thread configuration addresses critical engineering challenges in industrial settings where conventional right-hand fasteners would loosen under specific rotational forces. The 2"-12 UN thread pattern provides exceptional holding power in high-vibration equipment, machinery, and rotating assemblies. Manufactured from black-oxide steel with ASTM A108 compliance, this fastener delivers reliable corrosion resistance while maintaining Grade 2 strength in demanding environments. The thin profile design enables installation in confined spaces without compromising structural integrity, making it ideal for aerospace, automotive, and heavy machinery applications requiring specialized left-hand threading solutions with precise Class 2B thread fit.

Specification Summary & Compliance

This hex nut features precise UN Class 2B thread fit with 2"-12 extra fine thread spacing and left-hand direction. Manufactured to ASTM A108 specifications with Grade 2 strength rating. Dimensions include 3" width and 1 3/32" height with thin profile configuration. Compliant with RoHS 3 (2015/863/EU) with exemption 6(a) for lead as alloying element in steel and REACH (EC 1907/2006) regulations for hazardous substances.