S-91851A620 1/4"-20 Hex Nuts
Hex Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance from 18-8 stainless steel construction for long-lasting performance in harsh environments
- Enhanced wrenching surface with extra-wide thin profile provides better torque application and reduces slipping
- Reliable thread engagement with Class 2B fit ensures consistent clamping force and vibration resistance
- Quick installation through coarse UNC threads that accelerate assembly in time-sensitive operations
- Durable external hex drive allows for high-torque applications using standard industrial tools
- Compliance assurance with RoHS 3 and REACH standards for safe use in regulated industries
- Space-efficient design with 11/64" low-profile height ideal for constrained assembly areas
Professional Applications & Engineering Value
This 1/4"-20 UNC extra-wide thin hex nut delivers critical engineering advantages where standard fasteners fall short. The 18-8 stainless steel composition provides exceptional corrosion resistance for outdoor equipment, marine applications, and chemical processing environments where moisture and corrosive elements are concerns. The extra-wide thin profile offers superior wrench engagement that prevents rounding during high-torque installation, while the coarse thread spacing enables rapid assembly in production lines and maintenance scenarios. The Class 2B thread fit maintains precise tolerances for vibration-resistant connections in machinery, automotive assemblies, and structural frameworks. This combination of material strength and dimensional precision solves common challenges of fastener failure, installation inefficiency, and maintenance downtime.
Specification Summary & Compliance
Manufactured to exacting standards with 1/4"-20 UNC coarse threads and Class 2B thread fit for consistent dimensional accuracy. Features include external hex drive, right-hand thread direction, 1/2" width, and 11/64" height. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety and industrial use.
