S-99149A130 1/2"-13 ASME B18.2.2 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with black protective coating on 6061 aluminum for extended service life in harsh environments
• Reliable thread engagement with Class 2B thread fit ensuring consistent fastening performance and vibration resistance
• Industry-standard compatibility meeting ASME B18.2.2 specifications for guaranteed interchangeability and quality
• Optimized coarse threading (1/2"-13 UNC) enabling faster assembly and reduced cross-threading risks
• Durable external hex design providing secure tool engagement and high torque capability
• Lightweight aluminum construction reducing overall assembly weight without compromising strength
• Environmental compliance with RoHS 3 and REACH regulations for safe usage across regulated industries

Professional Applications & Engineering Value

This black corrosion-resistant coated 6061 aluminum hex nut delivers exceptional performance in demanding industrial applications where weight reduction and environmental durability are critical. The UNC coarse thread configuration combined with Class 2B thread fit ensures rapid installation and reliable performance in vibration-prone assemblies. Engineered to ASME B18.2.2 specifications, this external hex drive nut maintains dimensional consistency across industrial equipment, transportation systems, and structural frameworks. The protective coating on 6061 aluminum provides superior resistance to oxidation and corrosion, making it ideal for outdoor applications, marine environments, and chemical processing facilities where traditional steel fasteners would deteriorate prematurely.

Specification Summary & Compliance

This precision 1/2"-13 UNC hex nut features Class 2B thread fit tolerance for optimal engagement with mating components. Manufactured to ASME B18.2.2 dimensional standards with standard hex profile (3/4" width × 7/16" height) and right-hand thread direction. The product demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global markets and regulated industries.