S-91833A107 1/4"-28 Thumb Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced manual grip and torque application thanks to the knurled round head design
• Precise and reliable fastening ensured by the Class 2B thread fit for consistent engagement
• Excellent vibration resistance from the 1/4"-28 UNF fine thread spacing
• Quick and easy hand installation without the need for tools, increasing assembly efficiency
• Broad compatibility with standard UNF threaded components for versatile use
• Compliance with stringent environmental regulations including RoHS 3 and REACH for global market suitability

Professional Applications & Engineering Value

This 18-8 stainless steel thumb nut is engineered to solve common assembly challenges in industrial settings. The corrosion-resistant material ensures long-term reliability in moist or chemically aggressive environments, preventing fastener failure and reducing maintenance costs. The fully threaded design and UNF fine thread provide superior holding power and vibration resistance, which is critical in machinery, automotive, and electronic enclosures subject to dynamic loads. The knurled round head offers a secure, non-slip grip, enabling quick manual adjustments and disassembly without specialized tools, thereby streamlining maintenance and reducing downtime. Its standard profile and right-hand threading make it a versatile, drop-in replacement for a wide range of applications requiring robust, user-operable fastening solutions.

Specification Summary & Compliance

This thumb nut features a 1/4"-28 UNF fine thread with a Class 2B thread fit, ensuring precise dimensional accuracy and reliable performance with mating components. It is manufactured from 18-8 Stainless Steel and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.