S-97135A453 2"-12 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through durable nylon insert that maintains locking force under continuous stress
• Enhanced durability in demanding environments with black-oxide steel construction providing corrosion resistance
• High-temperature performance with nylon insert rated for operations up to 220°F without compromising locking capability
• Precise thread engagement with UN Class 2B extra fine threading ensuring secure fastening in critical applications
• Heavy-duty strength meeting Grade 8 specifications for maximum load-bearing capacity
• Industry-standard compatibility with external hex drive design for easy installation using common tools
• Regulatory compliance assurance with REACH and RoHS 3 certifications for global industrial use

Professional Applications & Engineering Value

This Grade 8 black-oxide steel nylon insert locknut delivers exceptional engineering value in high-vibration environments where fastener security is critical. The nylon insert locking mechanism creates consistent friction against mating threads, preventing loosening from machinery vibration, impact loads, and thermal cycling. The extra fine UN 2"-12 thread provides increased thread engagement surface area, distributing stress more evenly and reducing the risk of thread stripping in precision assemblies. With its 220°F temperature rating, this locknut maintains reliability in industrial equipment, automotive systems, and heavy machinery exposed to operational heat. The black-oxide surface treatment adds corrosion resistance while maintaining dimensional stability, making it ideal for outdoor equipment, construction machinery, and manufacturing applications where environmental factors challenge fastener integrity.

Specification Summary & Compliance

This industrial locknut features UN Class 2B thread fit with extra fine 2"-12 threading, ensuring precise dimensional accuracy and consistent performance. Manufactured to Grade 8 strength standards with dimensions of 3 9/64" width and 2 13/32" height. The product is fully compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, meeting international environmental and safety standards for industrial components. The right-hand thread direction and external hex drive style conform to industry specifications for compatibility with standard installation tools and procedures.