S-94365A400 5/16"-18 Thumb Nuts

Key Features & Benefits at a Glance

• Enhanced grip and torque application with combined flanged base and external hex drive for secure hand-tightening in tight spaces.
• Superior corrosion resistance provided by 18-8 Stainless Steel material, ideal for harsh or wash-down environments.
• Reliable and fast assembly with coarse UNC threads and Class 2B fit, ensuring easy starts and consistent engagement.
• Increased load distribution and vibration resistance from the integrated flange, which acts as a built-in washer.
• Durable, long-lasting performance with a right-hand thread design suited for high-use industrial applications.
• Compliance with stringent environmental regulations, meeting RoHS 3 and REACH standards for safe and sustainable use.
• Optimized for manual operation featuring a thumb nut profile and hex head for tool-free adjustments where needed.

Professional Applications & Engineering Value

This 5/16"-18 UNC flange thumb nut is engineered to solve common assembly challenges in industrial settings. The 18-8 Stainless Steel construction offers excellent resistance to rust and corrosion, making it suitable for applications in food processing, marine, and outdoor equipment where moisture is a concern. The flanged design eliminates the need for a separate washer, providing a larger bearing surface that helps prevent loosening under vibration and distributes clamping force more evenly. Combined with the external hex drive and thumb nut profile, it allows for quick installation and removal by hand or with a tool, reducing assembly time in maintenance, machinery, and electrical enclosures. The coarse UNC threads and Class 2B thread fit ensure reliable performance in dynamic load conditions, offering a robust fastening solution that enhances productivity and reduces downtime.

Specification Summary & Compliance

This thumb nut features a 5/16"-18 UNC coarse thread with a Class 2B thread fit for consistent engagement and dimensional accuracy. Key dimensions include a collar diameter of 17/32" and height of 13/32". It is manufactured from 18-8 Stainless Steel and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring it is free of hazardous substances and suitable for global industrial use.