S-92239A380 1/4"-20 Thumb Nuts

Key Features & Benefits at a Glance

• Enhanced grip and torque application with wing-shaped head design for tool-free hand tightening and loosening in tight spaces
• Superior load distribution and vibration resistance thanks to the 3/4" flat flange that increases surface contact area
• Exceptional corrosion resistance and durability provided by the black zinc alloy coating, ideal for harsh industrial environments
• Reliable, secure fastening with UNC coarse 1/4"-20 threads and Class 2B fit ensuring consistent engagement and reduced cross-threading risk
• Quick installation and removal facilitated by the right-hand thread direction and coarse thread spacing
• Robust construction with 0.04" flange thickness and 1/2" height for long-lasting performance under heavy-duty conditions
• Wide compatibility with inch-system components, making it versatile for various machinery and equipment assemblies

Professional Applications & Engineering Value

This heavy-duty thumb nut is engineered to solve common industrial fastening challenges, such as the need for rapid assembly without specialized tools. The black zinc alloy material offers excellent protection against rust and wear, extending service life in demanding settings like automotive, machinery, and outdoor equipment. The 3/4" flat flange distributes clamping force evenly, reducing the risk of surface damage and loosening under vibration—critical for maintaining integrity in industrial thumb nuts applications. With UNC coarse threads and a Class 2B thread fit, it ensures quick, secure connections that resist stripping, making it ideal for maintenance-heavy environments where efficiency and reliability are paramount.

Specification Summary & Compliance

This thumb nut adheres to standard inch measurements with precise dimensions: thread size of 1/4"-20 UNC, Class 2B thread fit for consistent tolerance, and a right-hand thread direction. It meets common industrial specifications for flanged thumb nuts, including compatibility with UNC coarse threading standards. The product is manufactured to ensure high quality and may conform to general industry guidelines such as RoHS and REACH for material safety, supporting reliable performance in professional applications.