S-91833A146 1/4"-28 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 vibration resistance through fine 1/4"-28 UNF threading for stable performance in dynamic applications
- Excellent corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Enhanced manual grip provided by knurled round head design for tool-free installation and adjustments
- Precise thread engagement with Class 2B thread fit ensuring reliable connections and reduced cross-threading risks
- Full-threaded design offering maximum thread contact for improved load distribution
- Comfortable handling with 3/4" head diameter and 1/2" collar height for secure finger grip
- Regulatory compliance meeting RoHS 3 and REACH standards for safe use across industries
Professional Applications & Engineering Value
This 18-8 Stainless Steel thumb nut delivers exceptional engineering value in applications requiring frequent adjustments or tool-free operation. The fine UNF threading (1/4"-28) provides superior resistance to loosening under vibration, making it ideal for machinery, electronic enclosures, and automotive assemblies. The knurled round head ensures positive grip even with oily hands or gloves, while the fully threaded design maintains consistent clamping force. Manufactured from corrosion-resistant stainless steel, it withstands harsh environments including marine, chemical processing, and outdoor equipment. The combination of Class 2B thread fit and precise manufacturing ensures reliable performance in precision assemblies where vibration resistance and quick access are critical requirements.
Specification Summary & Compliance
This thumb nut features 1/4"-28 UNF fine threading with Class 2B thread fit per UNF standards, ensuring precise engagement and dimensional accuracy. The collar diameter measures 1/2" with a 3/4" head diameter and 3/4" overall height. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental compliance and material safety for industrial applications worldwide.
