S-90876A190 3/8"-16 Thumb Nuts
Thumb Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Geometric Parameters
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Key Features & Benefits at a Glance
- Quick hand-tightening capability eliminates the need for tools, saving time and reducing labor costs in assembly and maintenance tasks
- Durable steel construction ensures reliable performance and long service life in demanding industrial environments
- Standard wing profile design provides excellent grip and torque application for secure fastening by hand
- Coarse UNC threads enable faster installation and reduced cross-threading risks compared to fine threads
- Class 2B thread fit offers consistent engagement and reliable performance with standard male threads
- Generous 7/8" base diameter distributes clamping force effectively across surfaces for stable connections
- Right-hand thread direction follows standard convention for intuitive installation in most applications
Professional Applications & Engineering Value
This heavy-duty steel thumb nut solves critical challenges in industrial assembly where frequent adjustments or quick access is required. The 3/8"-16 UNC coarse thread configuration combined with the standard wing profile enables rapid installation and removal without tools, making it ideal for maintenance panels, adjustable components, and temporary fixtures. The steel material provides the necessary strength for vibration resistance and repeated use, while the Class 2B thread fit ensures compatibility with standard bolts and studs. This thumb nut is particularly valuable in equipment servicing, prototyping, and applications where tool access is limited, significantly reducing downtime and improving operational efficiency in manufacturing, machinery, and electrical enclosures.
Specification Summary & Compliance
This thumb nut features 3/8"-16 UNC coarse threads with Class 2B thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy and reliable performance. The inch system measurement provides compatibility with North American equipment and components. Manufactured from steel for durability, this fastener meets industry standards for mechanical fasteners and is suitable for various industrial applications requiring hand-tightened solutions.