S-91833A134 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
- Superior manual grip with fully knurled head texture for secure handling in tight spaces without tools
- Excellent corrosion resistance from 18-8 stainless steel construction for long-term reliability in harsh environments
- Quick assembly and disassembly with coarse UNC threading and Class 2B fit ensuring smooth engagement
- Optimized torque application through 3/4" head diameter providing ample surface area for hand tightening
- Dimensional stability with standard thumb nut profile maintaining consistent performance across applications
- Environmental compliance meeting both RoHS 3 and REACH standards for safe industrial use
- Versatile right-hand threading compatible with standard 1/4"-20 fasteners for broad system integration
Professional Applications & Engineering Value
This 18-8 stainless steel thumb nut delivers critical performance advantages in industrial settings where corrosion resistance and tool-free operation are paramount. The fully knurled round head provides exceptional grip even with oily gloves, while the coarse UNC threading ensures rapid installation in vibration-prone equipment, electrical enclosures, and machinery maintenance applications. The Class 2B thread fit guarantees consistent engagement without cross-threading issues, making it ideal for frequent adjustment points in assembly jigs, production fixtures, and access panels. The combination of stainless steel material and knurled texture solves common problems of fastener deterioration and slippage in manufacturing environments, maintenance operations, and outdoor equipment where durability and manual operation are essential.
Specification Summary & Compliance
Manufactured to standard thumb nut profile with 1/4"-20 UNC coarse threading and Class 2B thread fit for consistent dimensional accuracy. Features include right-hand direction, fully threaded design, 3/4" head diameter, 1/2" collar diameter, and 1/2" overall height. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards for industrial applications.
