S-97190A020 7/16"-14 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through the reliable cotter pin locking mechanism, preventing loosening in high-stress environments
• Exceptional strength and durability with Grade 5 steel construction, supporting heavy-duty industrial applications
• Enhanced corrosion protection from zinc plating, extending service life in demanding conditions
• Optimized torque application via external hex drive design, enabling secure installation with standard tools
• Precise thread engagement with 7/16"-14 UNC Class 2B coarse threads, ensuring reliable fastening performance
• Quick visual safety verification through castle slot design, allowing immediate cotter pin status inspection
• Full regulatory compliance meeting RoHS 3 and REACH standards, ensuring environmental and safety requirements

Professional Applications & Engineering Value

This Grade 5 castle locknut delivers critical safety and reliability for industrial machinery, automotive systems, and construction equipment where vibration-induced loosening poses significant risks. The zinc-plated steel construction provides essential corrosion resistance while maintaining the high tensile strength required for demanding applications. Engineered with 7/16"-14 UNC coarse threads and Class 2B thread fit, it ensures consistent engagement and load distribution. The external hex drive facilitates high-torque installation, while the integrated cotter pin locking mechanism (accommodating 7/64" pins) creates a positive mechanical lock that withstands extreme vibration and shock loads, eliminating the need for frequent maintenance checks in critical assemblies.

Specification Summary & Compliance

This castle locknut features precise Class 2B thread tolerances with 7/16"-14 UNC coarse threads in right-hand orientation. Manufacturing complies with industry standards for Grade 5 strength classification, delivering consistent mechanical properties. Critical dimensions include 11/16" width and 3/8" height with cotter pin slots measuring minimum 0.135" depth and 0.12" width. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across industrial sectors.