S-90876A350 1/4"-20 Thumb Nuts

Key Features & Benefits at a Glance

• Enhanced manual tightening and loosening with standard wing profile design for tool-free operation in tight spaces
• Superior durability in demanding environments thanks to robust iron construction that resists wear and deformation
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and reduced cross-threading risks
• Quick installation and removal facilitated by coarse UNC threading that accelerates assembly processes
• Secure fastening for industrial equipment with 7/16" base diameter providing stable contact surface
• Wide compatibility with standard components using 1/4"-20 UNC right-hand thread common in North American machinery
• Optimized for repeated adjustments with wing-shaped head offering comfortable grip during frequent maintenance cycles

Professional Applications & Engineering Value

This iron thumb nut delivers exceptional value in industrial settings where rapid assembly and disassembly are critical. The UNC coarse thread design prevents binding in high-vibration applications, while the standard wing nut profile enables operators to make adjustments without tools - particularly valuable in maintenance scenarios where access is limited. The right-hand thread direction follows conventional standards, ensuring intuitive installation across various equipment types. Engineered for heavy-duty applications, this component solves common challenges in machinery maintenance, prototyping, and temporary fixturing by combining the strength of iron material with user-friendly wing design. The substantial 7/16" base diameter distributes clamping force effectively, preventing surface damage while maintaining secure connections in dynamic operating conditions.

Specification Summary & Compliance

This thumb nut features precision 1/4"-20 UNC coarse threads with Class 2B thread fit per ASME B1.1 standards, ensuring proper clearance and reliable performance. The inch system measurement provides compatibility with North American equipment specifications. Manufacturing follows industrial quality standards for dimensional accuracy, with 7/16" base diameter, 1 1/8" width across wings, and 5/8" height maintaining consistent form and function. The component meets general industrial requirements for mechanical fasteners and is suitable for applications where specific chemical compliance certifications are not mandated.