S-90098A135 1"-8 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through precision-engineered nylon insert that maintains locking force under dynamic loads
• Enhanced corrosion protection with 18-8 stainless steel construction for long-term reliability in harsh environments
• Optimal torque distribution from the extra-wide thin hex profile that reduces stress concentration during installation
• High-temperature performance with nylon insert rated up to 250°F for demanding industrial applications
• Precise thread engagement with Class 3B thread fit ensuring consistent, reliable fastening performance
• Easy installation and removal using standard external hex drive tools while maintaining locking integrity
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This 1"-8 UNC nylon insert locknut delivers exceptional engineering value in applications where vibration-induced loosening compromises safety and performance. The 18-8 stainless steel construction provides excellent corrosion resistance for outdoor equipment, marine applications, and chemical processing environments. The extra-wide thin hex profile distributes clamping force more effectively across mating surfaces, reducing the risk of damage to softer materials while allowing for higher torque values. The coarse UNC threads with Class 3B fit ensure rapid assembly without sacrificing precision, making these locknuts ideal for heavy machinery, transportation equipment, and industrial assembly lines where reliability under constant vibration is critical. The nylon insert maintains consistent locking performance through thermal cycles up to 250°F, providing durable fastening solutions for engine components, pump systems, and high-vibration industrial machinery.

Specification Summary & Compliance

This locknut features 1"-8 UNC coarse threads with Class 3B thread fit for precision engagement, manufactured to industry standards for dimensional accuracy. The external hex drive style accommodates standard wrenching tools while the right-hand thread direction follows conventional fastening practices. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. The nylon insert locking mechanism maintains performance within the specified temperature range while the stainless steel construction provides consistent mechanical properties across various operating conditions.