S-91831A150 3/4"-16 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking mechanism that maintains secure fastening in high-motion applications
• Excellent corrosion resistance provided by 18-8 stainless steel construction for long-lasting performance in harsh environments
• Precise thread engagement with Class 2B thread fit ensuring reliable installation and consistent torque performance
• High-temperature capability with nylon insert rated up to 220°F for thermal stability in demanding applications
• Easy installation and removal with standard external hex drive design compatible with common wrench tools
• Fine thread configuration (UNF 3/4"-16) delivering enhanced clamping force and superior resistance to loosening
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This nylon insert locknut delivers exceptional engineering value in applications where vibration resistance is critical. The 18-8 stainless steel construction provides superior corrosion resistance while maintaining mechanical strength, making it ideal for marine, automotive, and industrial equipment applications. The UNF fine thread configuration offers enhanced clamping force distribution and superior resistance to loosening under dynamic loads. The nylon insert creates consistent friction along the Class 2B threads, ensuring reliable locking performance without damaging mating components. With temperature resistance up to 220°F, this external hex locknut maintains its integrity in environments where thermal cycling would compromise ordinary fasteners, providing long-term reliability in demanding mechanical systems.

Specification Summary & Compliance

This precision 3/4"-16 UNF locknut features Class 2B thread fit tolerances per UNF standards, ensuring precise engagement with mating components. The external hex design (1-1/16" width, 7/8" height) provides standard wrench compatibility. Manufactured from 18-8 stainless steel with a nylon insert locking mechanism, this fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial applications worldwide.