S-91833A103 2-56 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 grip and tool-free operation with knurled round head design for easy hand tightening and adjustment
- Excellent corrosion resistance provided by 18-8 stainless steel construction for long-lasting performance in harsh environments
- Precise thread engagement with Class 2B thread fit ensuring reliable fastening and vibration resistance
- Quick installation capability through fully threaded design with right-hand coarse UNC threading
- Enhanced durability and strength from standard thumb nut profile with substantial 3/8" head diameter
- Secure collar seating with 7/32" collar diameter and 3/16" collar height for stable mounting
- Environmental compliance assurance meeting RoHS 3 and REACH standards for safe industrial use
Professional Applications & Engineering Value
This 2-56 UNC thumb nut delivers exceptional engineering value across industrial applications where tool-free assembly and disassembly are critical. The 18-8 stainless steel construction provides superior corrosion resistance, making it ideal for machinery, electronic enclosures, and outdoor equipment exposed to moisture and chemicals. The knurled round head offers positive grip even with oily hands or gloves, significantly reducing installation time while preventing slippage. The coarse thread spacing and Class 2B thread fit ensure quick engagement and reliable performance in vibration-prone environments. These thumb nuts are particularly valuable in maintenance-heavy applications where frequent adjustments are necessary, providing a cost-effective solution that combines durability with operational efficiency.
Specification Summary & Compliance
This inch-system thumb nut features precision 2-56 UNC coarse threading with Class 2B thread fit for consistent engagement. Manufacturing adheres to standard thumb nut profile specifications with 3/8" head diameter, 1/4" height, 7/32" collar diameter, and 3/16" collar height. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.
