S-92771A521 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
- Quick manual installation and removal with wing-shaped head design for tool-free operation in tight spaces
- Superior corrosion resistance due to brass material construction, ideal for humid or corrosive environments
- Reliable thread engagement with Class 2B thread fit ensuring consistent performance in assembly applications
- Enhanced durability from UNC coarse threading that resists stripping and maintains grip under vibration
- Wide compatibility with standard 1/4"-20 UNC threaded components commonly used in industrial equipment
- Compliance with environmental regulations through RoHS 3 and REACH compliance for global market acceptance
- Optimized handling comfort with 1 1/8" width providing ample surface area for secure finger grip
Professional Applications & Engineering Value
This brass thumb nut with UNC coarse threading addresses critical needs in industrial maintenance and assembly where tool access is limited. The right-hand thread direction and Class 2B thread fit provide reliable fastening in vibration-prone applications such as electrical enclosures, machinery guards, and fluid handling systems. The standard wing nut profile enables rapid adjustments without specialized tools, while the brass material offers excellent corrosion resistance in demanding environments including marine, plumbing, and outdoor equipment. Its 31/64" base diameter and 5/8" height create a balanced design that withstands repeated manual operation without compromising structural integrity.
Specification Summary & Compliance
This thumb nut features 1/4"-20 UNC coarse threads with Class 2B thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy. The right-hand thread direction and standard wing nut profile provide consistent performance across industrial applications. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental responsibility and material safety for global supply chain requirements.
