S-94450A532 1"-8 ANSI/ASME 18.2.2 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
• Optimized for space-constrained assemblies with a thin profile, providing secure fastening where standard nuts won't fit.
• Reliable left-hand thread engagement for specialized applications requiring reverse-threading to prevent loosening under counter-clockwise rotation.
• Precision Class 2B thread fit ensures smooth, consistent mating with male threads, reducing the risk of cross-threading and assembly errors.
• Robust coarse UNC thread design offers quicker installation and superior performance in high-vibration or dirty conditions.
• External hex drive compatibility allows for easy installation and removal with common wrenches, speeding up maintenance and assembly.
• Full compliance with industry and environmental regulations including ANSI/ASME 18.2.2, RoHS 3, and REACH, ensuring safety and legal adherence.

Professional Applications & Engineering Value

This 1"-8 UNC left hand thin hex nut is engineered to address critical challenges in industrial and mechanical systems where standard right-hand threads are unsuitable. Its 18-8 stainless steel composition provides excellent resistance to rust and chemical exposure, making it ideal for marine, chemical processing, and outdoor equipment. The left-hand thread design is essential for applications involving rotating shafts or components that naturally turn counter-clockwise, preventing unintended loosening. The thin hex nut profile is particularly valuable in compact assemblies, such as machinery guards, conveyor systems, and automotive components, where space savings are crucial without compromising on Class 2B thread fit accuracy. Combined with a coarse thread and external hex drive, this nut ensures rapid, secure fastening even in high-vibration environments, reducing downtime and maintenance costs.

Specification Summary & Compliance

This hex nut meets ANSI/ASME 18.2.2 standards with a Class 2B thread fit for consistent dimensional accuracy. Thread specifications include 1"-8 UNC coarse threads in a left-hand direction. Key dimensions are a width of 1-1/2 inch and height of 35/64 inch. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial use.