S-90630A170 3/4"-16 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through durable nylon insert that maintains locking force under dynamic loads
• High-strength performance with Grade 8 steel construction for demanding industrial applications
• Precise thread engagement with Class 2B fit ensuring reliable fastening and reduced cross-threading risk
• Extended temperature capability with nylon insert rated to 220°F for consistent performance in varied environments
• Easy installation and removal using standard tools with the 1-1/16" external hex drive design
• Fine thread advantage with 3/4"-16 UNF configuration providing better adjustment and vibration resistance
• Regulatory compliance assurance meeting REACH and RoHS 3 standards for safe industrial use

Professional Applications & Engineering Value

This Grade 8 steel nylon insert locknut delivers exceptional engineering value in high-vibration environments where fastener integrity is critical. The nylon insert locking mechanism creates consistent friction against mating threads, effectively preventing loosening from machinery vibrations, impact loads, and thermal cycling. The 3/4"-16 UNF fine threads with Class 2B fit ensure precise engagement with mating components, reducing the risk of cross-threading during assembly while providing superior resistance to vibrational loosening compared to coarse threads. The external hex drive style accommodates standard wrenching tools for efficient installation in confined spaces. Ideal for heavy machinery, automotive systems, industrial equipment, and construction applications where reliable vibration resistance and high-strength fastening are paramount requirements.

Specification Summary & Compliance

This locknut features precision 3/4"-16 UNF fine threads with Class 2B thread fit per ASME/ANSI standards, ensuring consistent engagement and reliable performance. The 1-1/16" hex width and 7/8" height provide optimal wrenching surfaces for secure installation. Manufactured from Grade 8 steel for high tensile strength applications, with a nylon insert rated to 220°F maximum temperature. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, meeting current industrial safety and environmental standards for hazardous substance restrictions.