S-97135A419 3/8"-24 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with nylon insert locking that maintains secure fastening under dynamic loads
• High-temperature durability with nylon insert rated for continuous operation up to 220°F (104°C)
• Exceptional strength performance from Grade 8 steel construction for heavy-duty industrial applications
• Precision thread engagement with UNF fine threading and Class 2B fit ensuring reliable installation
• Enhanced corrosion protection through black-oxide surface treatment for extended service life
• Standard external hex drive design for easy installation with common wrench tools
• Regulatory compliance assurance meeting both REACH and RoHS 3 environmental standards

Professional Applications & Engineering Value

This Grade 8 black-oxide steel locknut delivers critical vibration resistance in demanding industrial environments where fastener loosening can compromise system integrity. The nylon insert locking mechanism creates consistent friction against mating threads, effectively preventing rotational movement caused by machinery vibrations, impact loads, or thermal cycling. Engineered with UNF fine threading and Class 2B thread fit, this locknut ensures precise engagement with mating components while accommodating manufacturing tolerances. The black-oxide coating provides essential corrosion protection without significantly altering dimensional characteristics, making it ideal for automotive assemblies, heavy equipment, and industrial machinery where reliability under stress is paramount. With temperature resistance up to 220°F, this solution maintains locking performance across diverse operating conditions.

Specification Summary & Compliance

This locknut features 3/8"-24 UNF fine threading with Class 2B thread fit tolerances, ensuring compatibility with standard UNF threaded components. Manufactured from high-strength Grade 8 steel with dimensions of 9/16" width and 29/64" height. The product complies with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, confirming adherence to current environmental and safety standards for industrial components.