S-90098A110 1/4"-20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking mechanism that maintains secure fastening under dynamic loads
• Excellent corrosion resistance provided by 18-8 stainless steel construction for extended service life in harsh environments
• Precise thread engagement with Class 3B thread fit ensuring reliable, consistent performance in demanding applications
• Enhanced temperature tolerance with nylon insert rated up to 250°F for stable performance in thermal cycling conditions
• Optimized installation profile featuring extra-wide thin hex design for improved wrench access and space-constrained applications
• Industry-standard compatibility with UNC coarse threading system for seamless integration with existing equipment and components
• Environmental compliance assurance meeting RoHS 3 and REACH standards for responsible manufacturing and global acceptance

Professional Applications & Engineering Value

This nylon insert lock nut delivers exceptional engineering value in applications where vibration-induced loosening poses significant reliability concerns. The 18-8 stainless steel construction provides inherent corrosion resistance, making it ideal for outdoor equipment, marine environments, and chemical processing facilities where moisture and corrosive elements are present. The UNC coarse thread configuration with Class 3B thread fit ensures precise mating with standard male threads, reducing the risk of cross-threading during installation. The extra-wide thin profile offers improved tool engagement while maintaining a low-profile design for space-constrained assemblies. With temperature resistance up to 250°F, this lock nut maintains its locking integrity in engine compartments, industrial machinery, and automotive systems where thermal cycling occurs. The combination of external hex drive and right-hand threading provides familiar installation procedures while the nylon insert creates consistent friction to prevent rotational movement under continuous vibration.

Specification Summary & Compliance

This lock nut features precision Class 3B thread fit with UNC coarse thread spacing (1/4"-20) and right-hand thread direction. Manufacturing specifications include external hex drive style with extra-wide thin hex nut profile, measuring 1/2" width and 9/32" height. The product fully complies with RoHS 3 (2015/863/EU) requirements and REACH (EC 1907/2006) standards regarding substance restrictions, ensuring environmental responsibility and regulatory acceptance for industrial applications worldwide.