S-90099A029 1/4"-20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening in high-motion applications
• Enhanced corrosion resistance provided by 18-8 stainless steel construction for extended service life in demanding environments
• Increased torque application capability with extra wide hex profile that prevents rounding and improves installation efficiency
• Reliable high-temperature performance with nylon insert rated for continuous operation up to 250°F without compromising locking effectiveness
• Precise thread engagement with Class 2B thread fit ensuring consistent performance and reduced cross-threading risks
• Broad industrial compatibility through UNC coarse thread design that matches standard equipment and components
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications

Professional Applications & Engineering Value

This 1/4"-20 nylon insert lock nut delivers exceptional engineering value by solving critical vibration-induced loosening problems in industrial equipment. The 18-8 stainless steel construction provides excellent corrosion resistance while the nylon insert locking mechanism creates permanent friction that withstands intense vibrational forces in machinery, automotive, and manufacturing applications. The extra wide hex profile allows for higher torque application without damaging the fastener, making installation more efficient while preventing premature failure. With UNC coarse threads and Class 2B thread fit, this locknut ensures reliable engagement with standard components while the 250°F temperature rating maintains performance in elevated temperature environments common in industrial settings.

Specification Summary & Compliance

This locknut features precise 1/4"-20 UNC coarse threads with Class 2B thread fit for optimal engagement and dimensional accuracy. The fastener measures 1/2" width across flats and 3/8" height with right-hand thread direction. Manufacturing and material compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for industrial applications requiring certified components.