S-95065A109 5/8"-18 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted top lock thread technology that maintains secure fastening under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in demanding environments
• Precise thread engagement with Class 2B fine UNF threads ensuring reliable performance and reduced loosening risk
• Heavy-duty performance meeting Grade 5 strength requirements for high-stress industrial applications
• Easy installation and removal with standard external hex drive compatible with common wrench tools
• Regulatory compliance with REACH and RoHS 3 standards for safe use across global markets
• Optimal thread compatibility with 5/8"-18 UNF fine thread fasteners for precise mechanical assemblies

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel locknut addresses critical vibration-induced loosening challenges in heavy machinery, automotive, and industrial equipment. The distorted thread locking mechanism at the top section creates consistent friction that resists rotational forces, eliminating the need for additional locking devices. The UNF fine thread configuration provides more threads per inch compared to coarse threads, offering superior load distribution and enhanced resistance to vibrational loosening in precision assemblies. The zinc plating serves as both a protective barrier against corrosion and a lubricating layer that facilitates proper torque application during installation. Engineered for right-hand thread applications requiring reliable, maintenance-free fastening solutions, this locknut delivers exceptional performance in construction equipment, agricultural machinery, and transportation systems where vibration resistance is paramount.

Specification Summary & Compliance

This locknut features 5/8"-18 UNF fine threads with Class 2B thread fit tolerance for precise engagement, manufactured to Grade 5 strength classification standards. The external hex drive measures 15/16" across flats with a 5/8" height profile. Compliance includes REACH (EC 1907/2006) regulation adherence and RoHS 3 (2015/863/EU) certification, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.