S-93031A174 9/16"-18 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction, ideal for marine and chemical applications.
• Reliable left-hand thread engagement for specialized assemblies where reverse rotation is required to prevent loosening.
• Space-saving thin profile (5/16" height) allows for use in compact designs and tight clearance applications.
• Precise Class 2B thread fit ensures smooth assembly and consistent clamping force with UNF fine threads.
• Durable external hex drive provides excellent grip for high-torque installation using standard tools.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and material transparency for global supply chains.
• Optimized for fine-thread applications (18 TPI) offering enhanced vibration resistance and superior load distribution.

Professional Applications & Engineering Value

This 9/16"-18 UNF left-hand thin hex nut is engineered to solve critical challenges in demanding sectors. Its 316 stainless steel material provides exceptional resistance to chlorides and acidic conditions, making it a top choice for marine hardware, chemical processing equipment, and offshore installations. The left-hand thread direction is crucial for machinery where standard right-hand rotation would cause unintended loosening, such as in specific motor shafts or mixer assemblies. Combined with a thin hex profile, it delivers reliable performance where space is constrained, while the UNF fine thread and Class 2B fit ensure leak-proof seals and vibration resistance in high-stress environments. This nut is a dependable component for engineers requiring precision, durability, and compliance in corrosive settings.

Specification Summary & Compliance

This nut conforms to UNF (Unified National Fine) thread standards with a 9/16"-18 thread size and Class 2B thread fit for consistent dimensional accuracy. It is manufactured from 316 Stainless Steel with an external hex drive style, a width of 7/8", and a height of 5/16". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.