S-99937A103 8-32 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
- Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life
- Excellent hand-tightening capability thanks to the knurled round head design, providing a secure grip without tools
- Enhanced load distribution and stability from the integrated flange, reducing the risk of surface damage and loosening
- Reliable and precise coarse threading with 8-32 UNC and Class 2B fit, ensuring consistent engagement and vibration resistance
- Full threading for maximum adjustability, allowing for versatile positioning and secure fastening along the entire length
- Compliance with major safety standards including REACH and RoHS 3, ensuring environmental and workplace safety
- Durable and maintenance-free performance due to high-quality material and robust construction, lowering long-term costs
Professional Applications & Engineering Value
This 316 stainless steel thumb nut is engineered to address common industrial challenges such as corrosion, frequent adjustments, and tool-free assembly needs. The flanged design increases bearing surface area, preventing pull-through and distributing load evenly on sensitive materials. Its knurled round head ensures a firm grip, even with oily or gloved hands, making it ideal for maintenance panels, access covers, and machinery guards where quick disassembly is required. The 8-32 UNC coarse thread and Class 2B fit provide reliable engagement in various materials, reducing cross-threading risks and maintaining integrity under vibration. Built for durability in demanding settings like marine, chemical processing, and food equipment, this nut offers long-term reliability and corrosion resistance, minimizing downtime and replacement frequency.
Specification Summary & Compliance
This thumb nut features precise 8-32 UNC coarse threading with a Class 2B thread fit for consistent performance and ease of assembly. Key dimensions include a 3/8" collar diameter, 9/32" height, and fully threaded right-hand design. It complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, ensuring adherence to environmental and safety standards for industrial use.
