S-99862A510 1/4"-20 Thumb Nuts
Thumb Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
Geometric Parameters
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Key Features & Benefits at a Glance
- Effortless manual tightening with a wide 1 1/8" wing span and 7/8" height for superior grip in tight spaces without tools.
- Enhanced durability and corrosion resistance from the zinc alloy construction, ideal for demanding industrial environments.
- Reliable, quick assembly with UNC 1/4"-20 coarse threads and Class 2B fit, ensuring consistent engagement and reduced cross-threading risk.
- Secure fastening under vibration due to the right-hand thread direction and standard wing profile, maintaining hold in dynamic applications.
- Broad compatibility with a 15/32" base diameter, fitting standard inch-based components across various machinery and equipment.
- Compliance with global standards including RoHS 3 and REACH, guaranteeing safe, environmentally responsible use in regulated industries.
Professional Applications & Engineering Value
This zinc alloy thumb nut is engineered to solve common industrial fastening challenges, such as the need for rapid, tool-free adjustments in maintenance and assembly lines. The UNC coarse threads and Class 2B thread fit provide a balance of easy starts and secure locking, minimizing installation time while resisting loosening from vibrations in machinery, automotive, or electrical enclosures. Its wing-style design offers exceptional ergonomic benefits, reducing operator fatigue during repeated use. Made from robust zinc alloy, it withstands exposure to oils and moisture, ensuring long-term reliability in heavy-duty applications without compromising on RoHS and REACH compliance for safe integration into global supply chains.
Specification Summary & Compliance
This thumb nut adheres to precise dimensional standards, including a Class 2B thread fit for consistent performance with UNC 1/4"-20 coarse threads. It meets manufacturing specifications for inch-based systems, with a base diameter of 15/32", width of 1 1/8", and height of 7/8". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in environmentally conscious industries.
