S-90876A450 1/2"-13 Thumb Nuts

Key Features & Benefits at a Glance

• Tool-free installation and removal with 3" wide wings for maximum manual grip and efficiency
• Durable and long-lasting performance thanks to robust steel construction
• Secure and reliable fastening ensured by the Class 2B thread fit for minimal play
• Quick assembly in coarse-thread applications using the 1/2"-13 UNC right-hand thread
• Stable seating and alignment provided by the 1" base diameter
• Versatile compatibility with standard inch-system components and UNC threaded parts
• Optimized for high-use industrial environments with a standard wing profile for consistent performance

Professional Applications & Engineering Value

This heavy-duty steel thumb nut is engineered to solve critical challenges in maintenance, machinery, and equipment assembly. The 1/2"-13 UNC coarse thread and Class 2B fit enable rapid, tool-free installation and disassembly, drastically reducing downtime in production lines or field service. The 3" wings offer an ergonomic grip even with gloves, while the steel material ensures resistance to wear and deformation under repeated use. Ideal for applications requiring frequent adjustments—such as panel fastening, jigs, and temporary fixtures—this nut combines the strength of a standard wing nut profile with the convenience of hand-tightening, eliminating the need for wrenches in tight spaces.

Specification Summary & Compliance

This thumb nut adheres to UNC thread standards with a 1/2"-13 thread size and Class 2B thread fit for precise, reliable engagement. Manufactured to common industrial specifications for inch-system fasteners, it ensures consistent dimensional accuracy with a base diameter of 1", width of 3", and height of 3/4". The right-hand thread direction and coarse thread spacing are designed for quick assembly. The product is made from steel and conforms to industry standards for material quality, supporting use in various industrial and mechanical applications.