S-91833A109 5/16"-24 Thumb Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Enhanced manual grip from the knurled round head design, enabling quick installation and removal without tools
• Precise thread engagement with Class 2B fit and UNF fine threading for secure, vibration-resistant fastening
• Full-threaded design ensures maximum thread contact and consistent clamping force across applications
• Standard inch dimensions (5/16"-24 thread, 1/2" collar) for seamless compatibility with existing industrial equipment
• Compliance assurance with RoHS 3 and REACH regulations for safe use in regulated industries
• Right-hand threading provides intuitive installation following conventional assembly practices

Professional Applications & Engineering Value

This 18-8 stainless steel thumb nut delivers exceptional value in applications requiring frequent adjustments or tool-free maintenance. The knurled round head provides positive grip even with oily hands or gloves, significantly reducing assembly time in machinery, electrical enclosures, and production line equipment. Its UNF fine thread configuration offers superior resistance to loosening under vibration compared to coarse threads, while the fully threaded design ensures consistent clamping force across the entire engagement length. The corrosion-resistant properties of 18-8 stainless steel make it ideal for food processing, marine, and outdoor applications where moisture and chemicals are present. With its Class 2B thread fit, this thumb nut maintains precise tolerances for reliable performance in precision assemblies.

Specification Summary & Compliance

This thumb nut features 5/16"-24 UNF fine threads with Class 2B thread fit for precise engagement and optimal performance. Dimensions include 1/2" collar diameter, 5/8" total height, and 1" head diameter with standard profile. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial applications. All threading follows UNF standards with right-hand direction for conventional assembly.