S-97135A436 1 1/8"-7 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking that maintains secure fastening even under intense dynamic loads
• Exceptional temperature performance with nylon insert retaining locking capability up to 220°F (104°C) for high-heat environments
• Maximum strength reliability with Grade 8 steel construction ensuring consistent performance in heavy-duty applications
• Enhanced corrosion protection through black-oxide coating that provides durable surface resistance in industrial conditions
• Precise thread engagement with UNC Class 2B coarse threads enabling quick installation and reliable mating with male threads
• Optimized installation efficiency through standard external hex design allowing for conventional wrenching and torque application
• Comprehensive regulatory compliance meeting both REACH and RoHS 3 standards for safe industrial use

Professional Applications & Engineering Value

This Grade 8 Black-Oxide Steel Nylon Insert Locknut delivers critical vibration resistance for heavy machinery, automotive assemblies, and structural applications where loosening prevention is paramount. The nylon insert locking mechanism creates consistent friction against mating threads, effectively dampening vibrational forces that compromise standard fasteners. Engineered with UNC coarse threads and Class 2B thread fit, this external hex locknut ensures reliable engagement in high-stress environments while accommodating minor misalignments. The black-oxide finish provides essential corrosion protection, extending service life in demanding industrial settings. With temperature resilience up to 220°F, this heavy-duty solution maintains locking integrity in engine compartments, manufacturing equipment, and construction machinery where thermal cycling occurs.

Specification Summary & Compliance

This industrial locknut features 1 1/8"-7 UNC coarse threads with Class 2B thread fit for precise mating compatibility. Manufactured to Grade 8 strength standards with standard external hex profile (1 5/8" width) for conventional tooling. The assembly maintains dimensional accuracy per inch measurement system requirements. Compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, ensuring adherence to international safety and environmental standards for industrial components.