S-93031A176 5/8"-18 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• Reliable left-hand thread engagement prevents loosening under counter-clockwise rotational forces in specialized machinery and equipment.
• Precise Class 2B thread fit ensures smooth assembly and consistent clamping force, reducing the risk of cross-threading and component damage.
• Space-saving thin hex profile (3/8" height) allows for installation in tight clearance areas without sacrificing strength.
• Standard external hex drive provides compatibility with common wrenches and sockets for fast, secure installation and removal.
• Fine UNF thread spacing (18 TPI) offers superior vibration resistance and improved load distribution compared to coarse threads.
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring safety and environmental responsibility in global supply chains.

Professional Applications & Engineering Value

This 5/8"-18 UNF left hand thin hex nut in 316 Stainless Steel is engineered for demanding applications where reverse threading is critical for safety and functionality. Its fine thread design and Class 2B fit provide superior resistance to vibrational loosening in rotating assemblies, such as pump shafts, mixer blades, and automotive components that require left-hand threads to prevent unintended disassembly. The thin profile is particularly valuable in compact designs and retrofit situations where space is limited. Manufactured from corrosion-resistant 316 Stainless Steel, it delivers long-term reliability in chemical processing, marine, and food-grade environments, solving common failure points caused by material degradation and thread wear.

Specification Summary & Compliance

This nut features a 5/8"-18 UNF left-hand fine thread with a Class 2B thread fit per unified inch standards, ensuring dimensional accuracy and interchangeability. Key dimensions include a 15/16" width across flats and a 3/8" height. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to strict environmental and safety standards for industrial use.