S-90630A214 1 1/2"-8 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking that maintains secure fastening even under continuous stress
• High-temperature performance with nylon insert maintaining locking capability up to 220°F for demanding industrial environments
• Exceptional strength and durability from Grade 8 steel construction, ensuring reliable performance in heavy-duty applications
• Easy installation and removal with standard external hex drive design compatible with common wrenching tools
• Precise thread engagement through Class 2B thread fit and coarse UNC threading for reliable assembly in various materials
• Environmental compliance assurance with REACH and RoHS 3 certification for safe use in regulated industries
• Reusable locking capability allowing multiple installations without significant performance degradation

Professional Applications & Engineering Value

This Grade 8 steel nylon insert locknut delivers critical vibration resistance in demanding industrial applications where secure fastening is paramount. The nylon insert locking mechanism creates consistent friction against mating threads, effectively preventing loosening from machinery vibration, impact loads, and thermal cycling. Engineered with coarse UNC threading and Class 2B thread fit, this heavy-duty external hex locknut ensures reliable engagement in steel structures, heavy equipment, and automotive assemblies. The 220°F maximum temperature rating makes it suitable for engine compartments, industrial machinery, and manufacturing equipment where thermal stability is essential. Its robust construction addresses common failure points in vibration-prone environments, providing maintenance-free performance and reducing downtime in critical applications.

Specification Summary & Compliance

This locknut features 1 1/2"-8 UNC coarse threading with Class 2B thread fit for precise engagement, manufactured from high-strength Grade 8 steel with standard external hex drive (2 25/64" width, 1 59/64" height). The product complies with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring environmental responsibility and workplace safety. Right-hand thread direction and nylon insert locking mechanism provide reliable performance across multiple installation cycles while maintaining vibration resistance in industrial applications.