S-91833A147 1/2"-20 Thumb Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Excellent hand-tightening capability through knurled round head design providing secure grip without tools
• Precise thread engagement with Class 2B UNF fine threading ensuring reliable fastening in vibration-prone applications
• Enhanced load distribution from the 5/8" collar diameter that minimizes surface damage and improves joint integrity
• Maximum thread contact through fully threaded design for superior holding power and consistent clamping force
• Regulatory compliance assurance meeting both RoHS 3 and REACH standards for global industrial applications
• Versatile inch-system compatibility with standard UNF threading for easy integration into existing equipment and assemblies

Professional Applications & Engineering Value

This 18-8 stainless steel thumb nut delivers exceptional engineering value in applications requiring frequent adjustments or tool-free operation. The knurled head texture and generous 1-1/8" diameter provide superior tactile grip, even with gloved hands, while the UNF fine threading (1/2"-20) offers precise adjustment capability and vibration resistance. The substantial 5/8" collar diameter distributes clamping force effectively, preventing damage to soft materials and maintaining joint integrity. Ideal for machinery access panels, electrical enclosures, and production equipment requiring regular maintenance, this fully threaded thumb nut ensures reliable performance in industrial environments where corrosion resistance and quick access are paramount.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit for consistent performance across applications. Features right-hand UNF fine threading (1/2"-20) with standard inch measurements. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance. The standard thumb nut profile with round head shape and knurled texture meets industrial fastening requirements for manual operation and tool-free applications.