S-90507A033 1/2"-13 Cap Nuts

Key Features & Benefits at a Glance

• Secure vibration-resistant locking through distorted thread technology that maintains clamp force in high-vibration environments
• Superior corrosion resistance with 18-8 stainless steel construction for extended service life in harsh conditions
• Precise thread engagement with Class 2B fit ensuring reliable installation and consistent torque performance
• Heavy-duty load capacity from the standard cap nut profile and coarse UNC thread design
• Easy installation and removal using standard wrenches with the external hex drive style
• Environmental compliance assurance meeting both RoHS 3 and REACH regulations for industrial applications
• Complete thread protection with the cap design that covers and seals the end of threaded components

Professional Applications & Engineering Value

This 18-8 stainless steel cap locknut delivers critical performance where vibration resistance and environmental durability are paramount. The distorted thread locking mechanism creates consistent friction along the mating threads, effectively preventing loosening under dynamic loads without requiring additional locking elements. Engineered with UNC coarse threads and Class 2B fit, this fastener provides reliable engagement in industrial equipment, machinery, and structural applications where repeated adjustment isn't anticipated. The combination of corrosion-resistant stainless steel and the protective cap design makes it ideal for outdoor equipment, marine applications, and chemical processing environments where both security and material integrity are essential. The external hex drive allows for efficient installation using standard tools while maintaining the nut's locking performance throughout its service life.

Specification Summary & Compliance

This heavy-duty cap locknut features 1/2"-13 UNC coarse threads with Class 2B thread fit for precise dimensional accuracy and reliable mating with corresponding male threads. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring suitability for regulated industrial applications. With dimensions of 3/4" width and 13/16" height, this right-hand thread nut provides consistent performance across demanding assembly requirements while maintaining full compliance with industrial fastening specifications.