S-98858A104 1/2"-13 Cap Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
• High-strength performance with Grade 5 classification ensuring reliable load-bearing capacity for demanding applications
• Easy installation and removal with standard external hex drive design compatible with common tools
• Secure thread engagement with Class 2B UNC coarse threads providing optimal fit and vibration resistance
• Complete thread protection with cap nut design that seals and covers thread ends against contaminants
• Regulatory compliance assurance with RoHS 3 certification meeting environmental standards for industrial use
• Dimensional precision with consistent 3/4" width and 13/16" height for uniform assembly across multiple applications

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel cap nut delivers exceptional engineering value through its robust construction and precise UNC coarse threading. The 1/2"-13 thread size with Class 2B fit ensures reliable fastening in high-vibration environments where loosening could compromise structural integrity. The zinc plating provides essential corrosion protection for outdoor equipment, machinery, and automotive applications exposed to moisture and chemicals. The external hex drive design allows for high-torque installation using standard wrenches, while the cap profile protects threads from damage and prevents fluid ingress in hydraulic systems. These features make it ideal for construction equipment, industrial machinery, and transportation applications requiring heavy-duty fastening solutions that maintain performance under stress.

Specification Summary & Compliance

This cap nut features 1/2"-13 UNC coarse threads with Class 2B thread fit ensuring precise dimensional accuracy and reliable mating with corresponding male threads. Manufactured from zinc-plated steel with standard inch measurement system specifications, the fastener maintains consistent 3/4" width and 13/16" height dimensions. The product complies with RoHS 3 (2015/863/EU) regulations under exemption 6(a)-I for lead as an alloying element in steel, meeting environmental standards for industrial components while maintaining the required Grade 5 strength classification for high-performance applications.