S-91839A123 1/4"-20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through the unique flex-top design, preventing loosening in high-motion environments
• Excellent corrosion resistance provided by 18-8 stainless steel construction, ensuring longevity in harsh conditions
• Reliable thread engagement with Class 2B thread fit, offering consistent performance and easy assembly
• Enhanced installation efficiency with standard external hex drive, compatible with common tools for quick fastening
• Optimal material compliance meeting RoHS 3 and REACH standards, suitable for regulated industrial applications
• Durable coarse threading (UNC 1/4"-20) that resists cross-threading and maintains grip under stress
• Standard hex profile (7/16" width) for secure wrenching and uniform torque application

Professional Applications & Engineering Value

This 1/4"-20 UNC flex-top locknut delivers critical vibration resistance in demanding industrial settings where machinery stability is paramount. The 18-8 stainless steel construction combats corrosion in outdoor, marine, or chemical-exposed environments, while the flex-top locking mechanism creates consistent friction against mating threads to prevent rotational loosening. Engineered with Class 2B thread fit and coarse UNC threading, it ensures rapid installation and reliable performance in automotive assemblies, conveyor systems, and heavy equipment where external hex drive accessibility is essential for maintenance efficiency.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit and UNC 1/4"-20 coarse threading. Features a standard hex profile (7/16" width, 19/64" height) with right-hand thread direction. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met for industrial fastener applications.